Inventory of Collection as of 2021-11-07

ManufacturerModelYearSerial NumberOriginTypeLengthMaterialDuplexCaseBoxProblemAccession No.LocationScanned
A W FaberPre-3641910GermanyLinear25.0Wood0000MHF-406MHF-D230
A W FaberPre-360 Decimal Tracker Cursor1900GermanyLinear25.0Wood0101MHF-405MHF-D230
A W Faber1/87 Calculating Rule1975GermanyLinear25.0Wood0000MHF-403MHF-D230
A W Faber1/87 Calculating Rule1975GermanyLinear25.0Wood0001MHF-407MHF-D230
ACU-Math ManualMannheim Type Slide Rule No. 440USAManual0.0Paper0000MHF-753MHF-D220
AcumathInstructions for using Trig and Log Log Slide Rules1965USAManual0.0Paper0000MHF-621BMHF-D220
Acumath600 Basic Trig1955USALinear25.0Wood0100MHF-355MHF-D220
Acumath400T Simplex Trig1968USALinear25.0Plastic0100MHF-354MHF-D220
Acumath400B Simplex Trig1965USALinear25.0Plastic0100MHF-353MHF-D220
Acumath400 Simplex Trig1968R F LeachUSALinear25.0Plastic0100MHF-580Display0
Acumath - Berger Scientific suppliesC2165 Log Log Decimal Trig1965USALinear25.0Plastic1110MHF-621MHF-D220
Acumath - Berger Scientific suppliesC21411965USALinear25.0Plastic0000MHF-622MHF-D220
Aero Products Reasearch, Inc.E6-B2 Flight Computer1978No ValueNo Value24.5Metal0100MHF-465MHF-D250
Albert NestlerMannheim1939G. T. PoundGermanyLinear35.0Wood0100SoldSold0
Albert NestlerA N0GermanyLinear12.5Wood0100MHF-400MHF-D230
Albert Nestler24 Rietz0GermanyLinear50.0Wood0100MHF-624MHF-D230
Albert Nestler23R Rietz0GermanyLinear25.0Wood0000MHF-401MHF-D230
Albert Nestler14/52 Micronta0GermanyLinear25.0Plastic0100MHF-402MHF-D230
American Adding Machine5055237USAAdding Machine0.0Metal0000MHF-769Workshop0
American Blueprint Co.Military Slide Rule0USALinear25.0Wood0100MHF-469MHF-D250
American Blueprint Co.Military Slide Rule0SA613USALinear25.0Wood0100MHF-468MHF-D250
American Pattern WorksWeight Slide Rule0USASpecial38.0Wood0000MHF-423MHF-D240
American Radio Relay League, Inc.Ligthning Calculator Type A1932USASpecial18.5Paper0000MHF-521MHF-D180
American Slide-Chart Corp.ENI Power Level Conversion Chart1984USASpecial15.0Paper0000MHF-631MHF-D180
American Slide-Chart Corp.Axelson Factorule for Oil Wells1980USASpecial14.2Plastic0100MHF-432MHF-D240
AmphenolAmphenol RF Calculator, Smith Chart1969USASpecial22.0Plastic0000MHF-520MHF-D180
Amtronix, Inc.Caliputer1965USASpecial10.0Metal0100MHF-445MHF-D240
AnsonAm Inst Chem Eng01-2012KG.F.USAJewelry4.5Metal0000MHF-639MHF-Box10
Apec Products Corp.Magic Multiplying Pencil0USASpecial16.0Wood0000MHF-665MHF-Box10
AREL G-WPhoto Slide Rule1946USASpecial29.0Wood0100MHF-623MHF-D250
Aristo870 Multilog19672FL08GermanyLinear12.5Plastic1110MHF-413MHF-D230
Aristo869 Studiolog19722LIT1GermanyLinear12.5Plastic1100MHF-412MHF-D230
Aristo868 Studio19732LST10GermanyLinear12.5Plastic1110MHF-411MHF-D230
Aristo10175 Electronic0GermanyLinear25.0Plastic0100MHF-414MHF-D230
Aristo0969 StudioLog19732LS 9GermanyLinear25.0Plastic1100MHF-416MHF-D230
Aristo0968 Studio19605938GermanyLinear25.0Plastic1100MHF-583Display0
Aristo0968 Studio1960604GermanyLinear25.0Plastic1000MHF-415MHF-D230
Aristo Charvoz0971 Aristo-Hyperbolog1960601GermanyLinear25.0Plastic0100MHF-419MHF-D230
Aristo Charvoz0970P MultiLog1969572GermanyLinear25.0Plastic1110MHF-417MHF-D230
Aristo Charvoz0970 MultiLog19692FX21GermanyLinear25.0Plastic1100MHF-418MHF-D230
ArithmaAddiator0GermanyAdditator16.0Metal0000MHF-476MHF-D250
ArithmaAddiator0GermanyAdditator16.0Metal0000MHF-474MHF-D250
ArithmaAddiator0GermanyAdditator16.0Metal0100MHF-475MHF-D250
Armour and CompanyRetail Meat Pricer1933USASpecial22.5Plastic0000MHF-459MHF-D240
Automatic Adding Machine COGolden Gem Model 160102028USAAdditator13.0Metal0000MHF-533Cabinet0
Automatic Adding Machine COGolden Gem050857USAAdditator13.0Metal0001MHF-532MHF-D120
B. L. Makepeace0USAJewelry4.5Metal0000MHF-640MHF-Box10
B. T. U. Rule Co.B. T. U. rule for Est. Steam or Water Rad.1911USALinear29.5Wood0011MHF-440MHF-D240
Baron BucklesEngineer1981TaiwanJewelry7.0Metal0000MHF-641MHF-Box10
Bastian Bros. CoJETS Lapel Pin0USAJewelry2.4Metal0000MHF-637MHF-Box10
Bastian Bros.coJETS / Keuffel & Esser Lapel Pin0USAJewelry2.4Metal0000MHF-638MHF-Box10
Belcher Bros & CoShoe Fitting Ruler1900USASpecial39.0Wood0000MHF-272MHF-D100
Bieker'sConcrete Volume Computer0USASpecial16.0Plastic0000MHF-452MHF-D240
Blundell Rules LimitedPilot Ballon Slide Rule, Mark IV02768/56UKSpecial60.0Plastic0010MHF-489MHF-D140
Blundell Rules LimitedP16-D1956PEM GiftUKLinear12.5Plastic0100MHF-395MHF-D230
Boonshaft & Fuchs, Inc / Servo Calculator CompanyDirect Reading Frequency Response Slide Rule1959USASpecial35.0Plastic0100MHF-634MHF-D130
Brady Publishing CompanySlide Rule Problems Junior & Senior High School1958USAManual0.0Paper0000MHF-750MHF-D190
Brevets Kaufman SDBG FR.Baby-Cine Posograph0FranceSpecial12.0Metal0100MHF-547Cabinet1
Burroughs Adding Machine CompanyManual of Instructions for Burroughs Calculator1928USAManual0.0Hard Cover0000MHF-775Rolltop0
Burroughs Adding Machine CompanyClass 2 Adding Machine19202-661759USAAdding Machine0.0Metal0000MHF-771Workshop0
Burroughs Adding Machine CompanyBurroughs Calcualtor, Class 50USAAdding Machine0.0Metal0000MHF-774Rolltop0
C-Thru Ruler CompanyC-Thru Pocket Slide Rule NO. 270USALinear14.8Plastic0100MHF-376MHF-D200
Chadwick1960JapanAdding Machine11.0Plastic0000MHF-768Workshop0
Charles Bruning Co.2420 Simplex0Ashok KUSALinear25.0Plastic0001MHF-359MHF-D200
Charles Bruning Co.24010Smith...USALinear12.5Plastic0100MHF-356MHF-D200
Charles Bruning Co.24010USALinear12.5Plastic0100MHF-358MHF-D200
Charles Bruning Co.24011944USALinear12.5Plastic0110MHF-357MHF-D200
Charles C. EttienSpeed & HP Estimator1959USASpecial10.8Paper0000MHF-515MHF-D160
Charvoz-RoosSR-1090USALinear25.0Wood0100MHF-579Display0
Charvoz-RoosSR-1091941GHUSALinear25.0Wood1100MHF-362MHF-D200
Charvoz-RoosSR-1091946LGUSALinear25.0Wood1100MHF-360MHF-D200
Charvoz-RoosPSR-1021941USALinear12.5Wood0100MHF-361MHF-D200
Chemical Rubber Publishing Co.Trigonograph1934USASpecial30.0Plastic0100MHF-667MHF-D180
Concise28N Keyline0Magnetic Sheild DivisionJapanCircular6.5Plastic0100MHF-497MHF-D160
Concise28N0Bermuda Tool & DieJapanCircular6.5Plastic0100MHF-496MHF-D160
Contina AG MaureenCurta Calculator Type 1196977450LiechtenstienAdditator85.0Metal0110MHF-562Cabinet0
Contina Ltd MaureenCurta Calculator Type 21953500869LiechtenstienAdditator90.0Metal0100MHF-563Cabinet0
Contina Ltd MaureenCurta Calculator Type 21964526792LiechtenstienAdditator90.0Metal0100MHF-563Cabinet0
Continential Motors CorporationMotor Performance0USASpecial0.0Plastic0100MHF-451MHF-D240
Corona StarRenown Star Lighter0JapanJewelry3.0Wood0010MHF-642MHF-Box10
Cox & StevensC-130B Load Adjuster02301-1680-565-7735USASpecial25.0Plastic0100MHF-466MHF-D250
Creative WorkshopUniversal Circle Slide Rule1970DenmarkCylindrical7.0Plastic0000MHF-560Cabinet0
Creative WorkshopUniversal Circle Metric Converter1970Hong KongCylindrical7.0Plastic0010MHF-767Top Flat Files0
Creative WorkshopUniversal Circle Metric Converter1977Hong KongCylindrical7.0Plastic0000MHF-561Cabinet0
Crosby Steam Gauge & Valve CoSteam Gauge06432DUSAOther0.0Metal0100MHF-778Bookcase-20
Crown Paper Board Co., IncPaper Box Board Rule0USALinear15.7Plastic0010MHF-425MHF-D240
Cubic Calculator CompanyHC Cube Master1964USASpecial20.0Plastic0000MHF-518MHF-D180
D. HedBergGraphic Chemical Predictor1958USASpecial20.5Plastic0000MHF-522MHF-D180
DALExecutive Slide Rule Problem Solver1963USASpecial25.5Wood0010MHF-379MHF-D200
DanfossRefrigerant Slide RT.0X.A5.000DenmarkLinear0.0Plastic0000MHF-447MHF-D240
Datarule Publishing Co.Datarule Model B1950Samuel HellerUSALinear21.0Plastic0100MHF-431MHF-D240
Dennert & PapeHazen-Williams Hydraulic1923D.R.P.No126499GermanySpecial25.0Wood0010MHF-435MHF-D240
DevcoSlide Pen Cyl Model 200USAJewelry10.0Plastic0000MHF-643MHF-Box10
DietzgenN1733 Polymath Decimal Trig Log Log19598343USALinear25.0Wood1110MHF-582Display0
DietzgenB-1725 Vector Type Log Log1965JapanLinear25.0Wood1100MHF-365MHF-D200
Dietzgen1773 Log-Log19621262USALinear12.5Plastic0110MHF-368MHF-D200
Dietzgen1767P National1952USALinear25.0Wood0001MHF-364MHF-D200
Dietzgen1759-B Closed Simplex1927USALinear25.0Wood0000MHF-363MHF-D200
Dietzgen1739-L Clear-Scale1954GermanyLinear25.0Plastic0100MHF-399MHF-D200
Dietzgen1735 Maniphase Log Log Vector1952107274USALinear25.0Wood1100MHF-367MHF-D200
Dietzgen1734 Microglide Decimal Trig Log Log1970031310USALinear25.0Wood1100MHF-366MHF-D200
Dietzgen ManualSlide Rule No 1774 System Darmstadt Instructions0USAManual0.0Paper0000MHF-701MHF-D200
Dietzgen ManualManiphase Slide Rule0AM/1767/ISBUSAManual0.0Paper0000MHF-700MHF-D200
Dietzgen ManualDecimal Trig Log Log Slide Rule19591786, P-415USAManual0.0Paper0000MHF-698MHF-D200
DiltsPaper Stock Horsepower and Volume Calculator0USASpecial0.0Paper0000MHF-427MHF-D240
Diwa611-1 Electro Pocket0DenmarkLinear12.5Plastic0100MHF-626MHF-D230
E. S. A. Ltd Holborn ViaductHarrow Mark Reducer0UKSpecial55.9Wood0000MHF-486MHF-D251
E. W. Hiltpold Hiltpold Slide Rule1947+ Pat 227376SwitzerlandCircular10.0Plastic0100MHF-614Cabinet0
E.TATABeginner's Slide Rule 5550JapanLinear25.0Wood0100MHF-390MHF-D230
Edmund Scientific Co.Edmund S.N. 40,752 Chemical Predictor0602533-1USASpecial27.7Plastic0000MHF-630MHF-D180
Engineering InstrumentsThe Quick and Easy Slide Rule Instruction Book0USAManual0.0Paper0000MHF-340CMHF-D220
Engineering InstrumentsCode Maker0USASpecial18.0Wood0000MHF-341MHF-D220
Engineering Instruments10B?1967USALinear25.0Wood0100MHF-335MHF-D220
Engineering Instruments10-B?1959USALinear25.0Wood0010MHF-334MHF-D220
F C FarmarFarmar's Rule1920UKSpecial42.2Wood1000MHF-456MHF-D250
Faber Castell8/101975GermanyCircular12.5Plastic0100MHF-620MHF-D230
Faber Castell62/83N Novo-Duplex1974GermanyLinear12.5Plastic1110MHF-409MHF-D230
Faber Castell2/83N Novo-Biplex1962GermanyLinear25.0Plastic1100MHF-410MHF-D230
Faber Castell111/87A Addiator Rietz195757 11GermanyLinear25.0Plastic0100MHF-404MHF-D230
Fearns CalculatorsInertia Calculator for Rotating Masses0UKSpecial19.1Plastic0100MHF-527MHF-D180
Felt & Terrant Mfg. Co.Comptometer1920USAAdding Machine0.0Metal0000MHF-772Workshop0
FeutronFeuchte-Rechenstab - typ 18020GermanyLinear27.0Plastic1010MHF-441MHF-D240
Firth Sterling Steel & Carbide Corp.Wire Drafting Calculator1951USACircular11.0Plastic0100MHF-618MHF-D150
FowlerUniversal Calculator1950UKCircular7.5Metal0101MHF-494MHF-D160
Foxboro CompanyPub 19, Valve & Meter SR1962USASpecial13.5Plastic0100MHF-434MHF-D240
Foxboro CompanyPub 19, Valve & Meter SR1971USASpecial13.5Plastic0100MHF-433MHF-D240
Fredrick Post Co.14620JapanLinear25.0Wood1111MHF-613MHF-D230
Fredrick Post Co.14460JapanLinear25.0Wood0101MHF-384MHF-D230
Fredrick Post Co.1444K1951JapanLinear12.5Wood0100MHF-383MHF-D230
Fredrick Post Co.14411951BLJapanLinear10.1Wood0100MHF-381MHF-D230
Fuji551 RCA0JapanLinear12.5Plastic1110MHF-391MHF-D230
G. Felsenthal & Sonc, Inc.FAA-46C Computer, Air Navigation0AF5916761USASpecial28.2Metal0100MHF-464MHF-D250
Geo. W. RichardsonThe Slide Rule Simplifed1918USAManual0.0Paper0000MHF-688MHF-D220
Geo. W. RichardsonPantocrat Slide Rule1911USALinear25.0Metal0000MHF-345MHF-D220
Geo. W. Richardson812 Pantocrat Slide Rule1912USALinear25.0Metal0000MHF-346MHF-D220
Geo. W. Richardson812 Pantocrat Slide Rule1912USALinear25.0Metal0010MHF-347MHF-D220
Geo. W. Richardson1917 Military0USALinear43.4Metal0000MHF-352MHF-D220
Geo. W. Richardson1812 Pantocrat Mannheim1912Technical Supply Co.USALinear25.0Metal0000MHF-349MHF-D220
Geo. W. Richardson1776 Simplex1912USALinear25.0Metal0100MHF-351MHF-D220
Geo. W. Richardson1776 Simplex1912USALinear25.0Metal0101MHF-348MHF-D220
Geo. W. Richardson1776 Polymetric with CI1912USALinear25.0Metal0100MHF-350MHF-D220
Gerber Scientific Instrument Co.TP007200B Variable Scale0USASpecial50.0Metal0010MHF-480MHF-D140
Gerber Scientific Instrument Co.TP-007100 Variable Scale0USASpecial23.0Metal0010MHF-481MHF-D140
GilsonMidget1919USACircular10.0Metal0000MHF-505MHF-D171
GilsonMidget1931USACircular9.5Metal0000MHF-506MHF-D171
GilsonBinary1931Thomas D.PeaseUSACircular20.0Metal0100MHF-504MHF-D171
GilsonBinary1972MHFUSACircular20.0Metal0100MHF-541Display1
GilsonAtlas II Calculator1931USACircular20.0Metal0000MHF-540Display1
GilsonAtlas II - Binary1949William W. CorrellUSACircular20.0Metal1100MHF-502MHF-D171
GilsonAtlas I Calculator1922USACircular24.5Metal0100MHF-501MHF-D171
Gilson - Fredrick PostAtlas III Slide Rule1931USACircular20.0Metal0100MHF-503MHF-D171
Globemaster62200 plastic slide rule0JapanNo Value12.5Plastic0100MHF-392MHF-D230
GUCO8200 Concrete Estimator0USASpecial18.5Plastic0000MHF-454MHF-D240
H C CalculigrapheCalculigraphe Boucher1900FranceCircular4.5Metal1000MHF-267Cabinet0
HandmadeUpset Ratio0HandmadeUSASpecial20.8Metal0000MHF-443MHF-D240
HandmadeHead Depth0HandmadeUSASpecial20.6Metal0000MHF-444MHF-D240
HemmiAn Instruction Manual for Hemmi Slide Rules P280 and P28107004T0JapanManual0.0Paper0000MHF-697MHF-D230
Hemmi40RK1969JapanLinear25.0Wood0100MHF-385MHF-D230
Hemmi34RK Toshiba - Tokyo Shibaura Electric Co., Ltd.1960JapanLinear12.5Wood0100MHF-382MHF-D230
Hemmi26640JapanLinear25.0Plastic0010MHF-610MHF-D230
Hemmi257 Chemical1956G EJapanLinear25.0Wood1100MHF-608MHF-D230
Hemmi257 Chemical1965P KJapanLinear25.0Wood1100MHF-609MHF-D230
Hemmi / AhrendP2811969Date Code TLJapanLinear25.0Plastic0100MHF-386MHF-D230
Hemmi / AhrendAlgemene Handleiding Voortrekker Rekenlinialen P2811969Dat1380/5/QGermanyManual0.0Paper0000MHF-696MHF-D230
Hemmi / Fredrick Post Co.1447P1965JapanLinear25.0Plastic0010MHF-611MHF-D230
Hemmi / Fredrick Post Co.14471951JapanLinear25.0Wood0010MHF-577Display0
Hemmi / Teledyne Post44CA-600 Versalog II0WGJapanLinear25.0Wood1100MHF-387MHF-D230
Henry W. Tomlinson, A.I.A.The Winslow Strength Computing Slide-Rule1932USASpecial26.0Paper0010MHF-629MHF-D240
HoffmanAirplane Designer1921458USASpecial15.0Paper0000MHF-495Cabinet1
Hoffman ProductsShort Directions for Use of the 10- and 5 inches UTO Slide Rules02 copiesUSAManual0.0Paper0000MHF-752MHF-D190
Ingersoll-Rand Co.Cox's Compressed-Air Discharge Computer1900USASpecial11.0Paper0000MHF-490MHF-D161
Inst of Meteorology U of ChicagoPressure-Height Slide Rule1943John C. BellamyUSASpecial37.5Wood0000MHF-542Shop Wall1
Inst of Meteorology U of ChicagoHorizon Temp & Press Gradient Scale1943John C. BellamyUSASpecial22.0Paper0000MHF-543MHF-D161
IWA De Muiderkring N. V.IWA-TRONIC 02721963GermanyLinear20.0Plastic0100MHF-430MHF-D240
J. Amsler / B. K. Elliott Co192056442No ValuePlanimeter0.0No Value0010MHF-482MHF-D140
J. Halden & Co., Ltd.Halden Calculex1925UKCircular6.0Metal0100MHF-268Cabinet0
J. M. SpitzglassSpitzglass Slide Rule and Flow Computer1918USASpecial25.0Plastic0100MHF-436MHF-D240
James Farrow & SonPilot Ballon Slide Rule, Mark IV02652/53UKSpecial60.0Plastic0010MHF-487MHF-D140
Kesling Pocket Adder CompanyKes-Add Pocket Adder1950USAAddometer12.5Plastic0101MHF-472MHF-D250
Keuffel & EsserUnknown In/A,DF-CF,CI,C-C,K/CM S(dms)BLT1949434542USALinear25.0Wood0100MHF-81MHF-D31
Keuffel & EsserTimeSlide Calendar1955USASpecial29.5Wood1100MHF-598MHF-D100
Keuffel & EsserTie Tack0USAJewelry2.5Metal0010MHF-645MHF-Box10
Keuffel & EsserTie Tack0USAJewelry2.5Metal0010MHF-646MHF-Box10
Keuffel & EsserTie Clip Silver0USAJewelry4.0Metal0000MHF-644MHF-Box10
Keuffel & EsserTable, Graphical Firing, M121943USALinear40.2Wood0100MHF-471MHF-D250
Keuffel & EsserShort Base Triangulation1945USALinear50.0Wood0101MHF-248MHF-D90
Keuffel & EsserReymond Leather Calculator1926F308USASpecial50.0Wood0100MHF-546MHF-D120
Keuffel & EsserPL Slide Rule Indicator0USAMagnifier0Plastic10100
Keuffel & EsserPL Slide Rule Indicator0In PL BoxUSAMagnifier0Plastic10100
Keuffel & EsserNational Union Radio1937USALinear25.0Wood0100MHF-259MHF-D100
Keuffel & EsserN9081-3 Doric Log Log Decitrig195143448USALinear25.0Plastic1000MHF-193MHF-D60
Keuffel & EsserN9081-3 Doric Log Log Decitrig195417493USALinear25.0Plastic1100MHF-194MHF-D60
Keuffel & EsserN4238 Compensating Polar E/M19364576GermanyPlanimeter283.6Metal0100MHF-483Cabinet0
Keuffel & EsserN4133 Mannheim Roy Lance Electrican's1928210019USALinear20.0Wood0100MHF-255MHF-D100
Keuffel & EsserN4133 Mannheim Roy Lance Electrican's1947415945USALinear20.0Wood0100MHF-256MHF-D100
Keuffel & EsserN4101 Mannheim Stadia1942964847USALinear50.0Wood0100MHF-245MHF-D90
Keuffel & EsserN4100 Mannheim Stadia1954768599USALinear25.0Wood0110MHF-238MHF-D90
Keuffel & EsserN4096M Mannheim Merchant's1953896800USALinear50.0Wood0100MHF-232MHF-D90
Keuffel & EsserN4096 Mannheim Merchant's1950698326USALinear50.0Wood0010MHF-535Top Flat Files0
Keuffel & EsserN4096 Mannheim Merchant's1960629831USALinear50.0Wood0010MHF-534Top Flat Files0
Keuffel & EsserN4095 Merchant's192162 endUSALinear25.0Wood1100MHF-236MHF-D90
Keuffel & EsserN4092-5 Log Log1931309988USALinear50.0Wood1000MHF-206MHF-D70
Keuffel & EsserN4092-5 Log Log1934468477USALinear50.0Wood1100MHF-208MHF-D70
Keuffel & EsserN4092-5 Log Log1934468499USALinear50.0Wood1100MHF-207MHF-D70
Keuffel & EsserN4088-5 Polyphase1944170279USALinear50.0Wood1000MHF-141MHF-D110
Keuffel & EsserN4083-3 Log Log Vector1951738970USALinear25.0Wood1100MHF-203MHF-D60
Keuffel & EsserN4081-3 Log Log Decitrig1949519945USALinear25.0Wood1100MHF-568Display0
Keuffel & EsserN4081-3 Log Log Decitrig1949491367USALinear25.0Wood1000MHF-190MHF-D60
Keuffel & EsserN4081-3 Log Log Decitrig1951716229USALinear25.0Wood1100MHF-189MHF-D60
Keuffel & EsserN4080-3 Log Log Trig1947469618USALinear25.0Wood1101MHF-185MHF-D50
Keuffel & EsserN4080-3 Log Log Trig1950625153USALinear25.0Wood1100MHF-184MHF-D50
Keuffel & EsserN4058W Mannheim Beginner's1959USALinear25.0Wood0100MHF-31MHF-D11
Keuffel & EsserN4058W Mannheim Beginner's1959USALinear25.0Wood0100MHF-30MHF-D11
Keuffel & EsserN4053-5 Polyphase Mannheim1931355905USALinear50.0Wood0100MHF-103MHF-D110
Keuffel & EsserN4053-5 Polyphase Mannheim1950651936USALinear50.0Wood0100MHF-105Display0
Keuffel & EsserN4053-5 Polyphase Mannheim1950644999USALinear50.0Wood0100MHF-104MHF-D110
Keuffel & EsserN4053-3F Polyphase Mannheim192216355, 117 endUSALinear25.0Wood0100MHF-68MHF-D21
Keuffel & EsserN4053-3 Polyphase Mannheim1927211917USALinear25.0Wood0000MHF-60MHF-D21
Keuffel & EsserN4053-3 Polyphase Mannheim1932323979USALinear25.0Wood0101MHF-101MHF-D21
Keuffel & EsserN4053-3 Polyphase Mannheim1933386745USALinear25.0Wood0100MHF-62MHF-D21
Keuffel & EsserN4053-3 Polyphase Mannheim1933350478USALinear25.0Wood0100MHF-61MHF-D21
Keuffel & EsserN4053-3 Polyphase Mannheim1933383058USALinear25.0Wood0000MHF-63MHF-D21
Keuffel & EsserN4053-3 Polyphase Mannheim1940802937USALinear25.0Wood0000MHF-65MHF-D21
Keuffel & EsserN4053-3 Polyphase Mannheim1940859366, John KellerUSALinear25.0Wood0110MHF-122MHF-D21
Keuffel & EsserN4053-3 Polyphase Mannheim1943012841USALinear25.0Wood0100MHF-66MHF-D21
Keuffel & EsserN4053-3 Polyphase Mannheim194419676/19728USALinear25.0Wood0101MHF-102MHF-D21
Keuffel & EsserN4053-3 Polyphase Mannheim1944043255USALinear25.0Wood0101MHF-64MHF-D21
Keuffel & EsserN4053-3 Polyphase Mannheim1948368511USALinear25.0Wood0101MHF-100MHF-D21
Keuffel & EsserN4053-3 Polyphase Mannheim1952753791USALinear25.0Wood0110MHF-67MHF-D21
Keuffel & EsserN4053-2 Polyphase Mannheim192268048USALinear20.0Wood0100MHF-50MHF-D21
Keuffel & EsserN4053-2 Polyphase Mannheim192257609USALinear20.0Wood0100MHF-566Display0
Keuffel & EsserN4041 Mannheim1922026576USALinear25.0Wood0100MHF-17MHF-D11
Keuffel & EsserN4041 Mannheim1932338516USALinear25.0Wood0100MHF-18MHF-D11
Keuffel & EsserN4041 Mannheim1933436830USALinear25.0Wood0100MHF-20MHF-D11
Keuffel & EsserN4041 Mannheim1936549701USALinear25.0Wood0100MHF-19MHF-D11
Keuffel & EsserInstruction Manual Analon Eng-Sci Analy Slide Rule1967Analon BoxUSAManual0.0Hard Cover0110MHF-756MHF-D60
Keuffel & EsserIL Slide Rule Indicator, I Beam in pieces1933from 4092 86 endUSANo Value0.0Plastic10100
Keuffel & EsserIL Slide Rule Indicator1932In IL BoxUSAMagnifier0Plastic10100
Keuffel & EsserIL Slide Rule Indicator1932In IL BoxUSAMagnifier0.0Plastic10110
Keuffel & EsserI Slide Rule Indicator, Column Cursor in pieces1913from 4092 86 endUSAMagnifier0.0Metal1011ISRMISRM0
Keuffel & EsserHenning Pocket Recorder015USAOther0.0Metal0100MHF-777Bookcase-20
Keuffel & EsserF 4236 Compensating Polar E195448799 E 1647USAPlanimeter217.8Metal0010MHF-448MHF-D140
Keuffel & EsserEL Slide Rule Indicator0On 4051USAMagnifier0Plastic00100
Keuffel & EsserEL Slide Rule Indicator0USAMagnifier0Plastic00100
Keuffel & EsserEL Slide Rule Indicator0On 4041 TCLUSAMagnifier0Plastic00100
Keuffel & EsserEL Slide Rule Indicator0USAMagnifier0Plastic00110
Keuffel & EsserD68 1617 Polyphase Mannheim Decitrig1960660040USALinear25.0Wood0110MHF-123MHF-D21
Keuffel & EsserD68 1617 Polyphase Mannheim Decitrig1965030078USALinear25.0Wood0100MHF-73MHF-D21
Keuffel & EsserD4053-3 Polyphase Mannheim Decitrig1957320464USALinear25.0Wood0100MHF-71MHF-D21
Keuffel & EsserD4053-3 Polyphase Mannheim Decitrig1957320221USALinear25.0Wood0100MHF-72MHF-D21
Keuffel & EsserD Slide Rule Indicator1922USAMagnifier0Plastic00100
Keuffel & EsserCelcon Doric (68 1550)1962620214USALinear12.5Plastic1110MHF-147MHF-D40
Keuffel & EsserCelcon Doric (68 1550)1972USALinear12.5Plastic1100MHF-148MHF-D40
Keuffel & EsserBrick-O-Meter, Mackensen C. Co. Inc. Instructions1938USAManual0.0Paper0000MHF-702MHF-D100
Keuffel & EsserBrick-O-Meter, Mackensen C. Co. Inc.1938USASpecial24.2Wood0100MHF-265MHF-D100
Keuffel & EsserBellevillw Spring Washer Computer1967USASpecial25.0Plastic1100MHF-593MHF-D80
Keuffel & EsserBeatley I-Q Slide Rule1922USASpecial19.0Wood0000MHF-264MHF-D100
Keuffel & EsserAmerican Mannheim063 endUSALinear25.0Wood0000MHF-97MHF-D31
Keuffel & EsserAmerican Mannheim097 E endUSALinear25.0Wood0100MHF-98MHF-D31
Keuffel & Esser9071-3 Doric Polyphase Decitrig1952013371USALinear25.0Wood1100MHF-155MHF-D40
Keuffel & Esser9071-3 Doric Polyphase Decitrig19520012930USALinear25.0Plastic1100MHF-156MHF-D40
Keuffel & Esser9068 Doric Plastic Polyphase1947056542USALinear12.5Plastic0100MHF-144MHF-D40
Keuffel & Esser9068 Doric Plastic Polyphase19524823USALinear12.5Plastic1100MHF-143MHF-D40
Keuffel & Esser9061-1 Doric Mannheim19497486USALinear12.5Plastic0110MHF-74MHF-D31
Keuffel & Esser8858 Mannheim Beginner's WWII special 19441942USALinear25.0Wood0010MHF-32MHF-D11
Keuffel & Esser8858 Mannheim Beginner's WWII special 19441942USALinear25.0Wood0010MHF-33MHF-D11
Keuffel & Esser8858 Mannheim Beginner's WWII special 19441942USALinear25.0Wood0010MHF-635Wright Museum0
Keuffel & Esser7L Indicator Glass0x3USAMagnifier0No Value01000
Keuffel & Esser69 1955 Deci-Lon Projection1967USALinear20.0Plastic1110MHF-283MHF-D120
Keuffel & Esser68 2233 (4185-17) Magnifier1966USAMagnifier0.0Metal0010MHF-281MHF-D100
Keuffel & Esser68 1892 K-12 Prep Desk1972USALinear25.0Plastic0010MHF-36MHF-D21
Keuffel & Esser68 1892 K-12 Prep Desk1972USALinear25.0Plastic0000MHF-37MHF-D21
Keuffel & Esser68 1892 K-12 Prep1972USALinear25.0Plastic0000MHF-35MHF-D21
Keuffel & Esser68 1892 K-12 Prep1972USALinear25.0Plastic0100MHF-586Display0
Keuffel & Esser68 1791 (4150-1) Mannheim Merchant's1962004929USALinear12.5Plastic0110MHF-226MHF-D90
Keuffel & Esser68 1775 Merchant's1965400370USALinear25.0Wood0100MHF-231MHF-D90
Keuffel & Esser68 1775 Merchant's1965300031USALinear25.0Wood0110MHF-230MHF-D90
Keuffel & Esser68 1754 Mannheim Merchant's1964970082USALinear50.0Wood0100MHF-233MHF-D90
Keuffel & Esser68 1749 Mannheim Merchant's1966290013USALinear50.0Wood0010MHF-536Top Flat Files0
Keuffel & Esser68 1643 (4153-1C) Polyphase Mannheim1962018474USALinear12.5Plastic0110MHF-39MHF-D11
Keuffel & Esser68 1622 (4053-3, 68 1617) Polyphase Mannheim1962941324USALinear25.0Wood0110MHF-70MHF-D21
Keuffel & Esser68 1617 (4053-3) Polyphase Mannheim1962201058USALinear25.0Wood0100MHF-69MHF-D21
Keuffel & Esser68 1608 Polyphase Mannheim1960520285USALinear50.0Wood0100MHF-556MHF-D110
Keuffel & Esser68 1608 Polyphase Mannheim1968200089USALinear50.0Wood0100MHF-107MHF-D110
Keuffel & Esser68 1586 (4161-1) Manheim1962019198USALinear12.5Plastic0110MHF-75MHF-D31
Keuffel & Esser68 1576 (4161-3) Mannheim1954008308USALinear25.0Plastic0110MHF-76MHF-D31
Keuffel & Esser68 1565 GP121967033613USALinear25.0Plastic0100MHF-222MHF-D80
Keuffel & Esser68 1555 Polyphase Doric1966037383USALinear12.5Plastic0100MHF-594MHF-D40
Keuffel & Esser68 1497 Polyphase Decitrig1959540106USALinear25.0Wood1100MHF-154MHF-D40
Keuffel & Esser68 1486 (4143) Kissam Stadia1962398915USALinear25.0Plastic0100MHF-242MHF-D90
Keuffel & Esser68 1460 Cooke Radio Rule1962790157USALinear25.0Wood1100MHF-253MHF-D100
Keuffel & Esser68 1434 Log Log Vector1962460048USALinear25.0Wood1000MHF-204MHF-D60
Keuffel & Esser68 1400 Analon1966004661USALinear25.0Plastic0110MHF-223Cabinet0
Keuffel & Esser68 1318 Log Log Trig1963850517USALinear25.0Wood1100MHF-186MHF-D50
Keuffel & Esser68 1282 (4181-1C) Log Log Decitrig1965073387USALinear12.5Plastic1110MHF-160MHF-D40
Keuffel & Esser68 1256 Log Log Duplex Decitrig - Old 4181-31962034165USALinear25.0Plastic1110MHF-197MHF-D60
Keuffel & Esser68 1256 Jet-Log1966124832USALinear25.0Plastic1110MHF-199MHF-D60
Keuffel & Esser68 1251 Jet-Log1962119342USALinear25.0Plastic1100MHF-198MHF-D60
Keuffel & Esser68 1210 Log Log Decitrig1956270158USALinear25.0Wood1000MHF-192MHF-D60
Keuffel & Esser68 1210 Log Log Decitrig1958320384USALinear25.0Wood1100MHF-191MHF-D60
Keuffel & Esser68 1200 Log Log Decitrig1959480149USALinear50.0Wood1100MHF-212MHF-D70
Keuffel & Esser68 1130 Deci-Lon1961022454USALinear12.5Plastic1100MHF-214MHF-D80
Keuffel & Esser68 1130 Deci-Lon1961036452USALinear12.5Plastic0100MHF-215Cabinet0
Keuffel & Esser68 1100 Deci-Lon (no bars)1966236464USALinear25.0Plastic0100MHF-219MHF-D80
Keuffel & Esser68 1100 Deci-Lon (no bars)1966262936USALinear25.0Plastic1100MHF-221MHF-D80
Keuffel & Esser68 1100 Deci-Lon (no bars)1966244573USALinear25.0Paper1000MHF-220MHF-D80
Keuffel & Esser68 1100 Deci-Lon1962134429USALinear25.0Plastic1100MHF-218MHF-D80
Keuffel & Esser68 1100 Deci-Lon1962013952USALinear25.0Plastic1100MHF-216MHF-D80
Keuffel & Esser68 1100 Deci-Lon196228536USALinear25.0Plastic1100MHF-571Display0
Keuffel & Esser68 1100 Deci-Lon1962096252USALinear25.0Plastic1100MHF-217MHF-D80
Keuffel & Esser68 1100 Deci-Lon1962198975USALinear25.0Plastic1100MHF-557MHF-D80
Keuffel & Esser62000 Compensating Polar196295 229GermanyPlanimeter260.2Metal0010MHF-484MHF-D140
Keuffel & Esser6-C-1 US Navy (4168 Projection)1957USALinear20.0Plastic0100MHF-283MHF-D120
Keuffel & Esser4185C0w/ N4081-3 519945USAMagnifier0.0Metal0010MHF-569Display0
Keuffel & Esser4185C0USAMagnifier0.0Metal0010MHF-278MHF-D100
Keuffel & Esser4185B0w/ N4053-3 043255USAMagnifier0.0Metal0000MHF-552MHF-D21
Keuffel & Esser4185B0USAMagnifier0.0Metal0000MHF-276MHF-D100
Keuffel & Esser4185B0w/ N4053-3 012841USAMagnifier0.0Metal0010MHF-587MHF-D21
Keuffel & Esser4185B0USAMagnifier0.0Metal0010MHF-275MHF-D100
Keuffel & Esser4185B0USAMagnifier0.0Metal0010MHF-277MHF-D100
Keuffel & Esser4185-70USAMagnifier0.0Metal0110MHF-279MHF-D100
Keuffel & Esser4185-170USAMagnifier0.0Metal0110MHF-280MHF-D100
Keuffel & Esser4183B Belt Carrier0USANo Value0.0Metal0010MHF-282MHF-D100
Keuffel & Esser4181-3 Log Log Decitrig1954001578USALinear25.0Plastic1100MHF-195MHF-D60
Keuffel & Esser4181-3 Log Log Decitrig1954015574USALinear25.0Plastic1110MHF-196MHF-D60
Keuffel & Esser4181-1C Log Log Dectrig1954013986USALinear12.5Plastic1110MHF-159MHF-D40
Keuffel & Esser4181-1 Log Log Decitrig195429473USALinear12.5Plastic1010MHF-158MHF-D40
Keuffel & Esser4181-1 Log Log Decitrig1955029974USALinear12.5Plastic1100MHF-157MHF-D40
Keuffel & Esser4175 Kurtz Psychrometic1938USALinear23.0Wood0101MHF-263MHF-D100
Keuffel & Esser4168 Polyphase Doric1954009990USALinear12.5Plastic1000MHF-146MHF-D40
Keuffel & Esser4168 Polyphase Doric1958424114USALinear12.5Plastic0100MHF-145MHF-D40
Keuffel & Esser4161-3 Mannheim1954025172USALinear25.0Plastic0100MHF-77MHF-D31
Keuffel & Esser4161-3 Mannheim1954023720USALinear25.0Paper0100MHF-78MHF-D31
Keuffel & Esser4161-1 Polyphase Mannheim195440220USALinear12.5Plastic0101MHF-109MHF-D31
Keuffel & Esser4161-1 Polyphase Mannheim1954024555USALinear12.5Plastic0001MHF-108MHF-D31
Keuffel & Esser4160 Chemist's Slide Rule192318270USALinear25.0Wood1100MHF-262MHF-D100
Keuffel & Esser4160 Chemist's Slide Rule1932284731USALinear25.0Wood1001MHF-636MHF-D100
Keuffel & Esser4160 Chemist's Slide Rule1932355964USALinear25.0Wood1100MHF-261MHF-D100
Keuffel & Esser4158 K-12 Prep1961USALinear25.0Plastic0100MHF-34MHF-D21
Keuffel & Esser4158 K-12 Prep1961USALinear25.0Plastic0100MHF-592MHF-D21
Keuffel & Esser4158 K-12 Prep1961USALinear25.0Plastic0100MHF-591MHF-D21
Keuffel & Esser4153-1 Polyphase Mannheim1959064995USALinear12.5Plastic0100MHF-38MHF-D11
Keuffel & Esser4150-1 Mannheim Merchant's1954002878USALinear12.5Plastic0110MHF-225MHF-D90
Keuffel & Esser4150-1 Mannheim Merchant's19544293 Pat PendUSALinear12.5Plastic0100MHF-224MHF-D90
Keuffel & Esser4150-1 (9050-1) Mannheim Merchant's1954009583USALinear12.5Plastic0110MHF-227MHF-D90
Keuffel & Esser4141 Hudson's Horse Power Computing Scale1913Stanley LondonUKSpecial10.7Wood0100MHF-544Cabinet1
Keuffel & Esser4139 Cooke Radio Rule1946313985USALinear25.0Wood1110MHF-249MHF-D100
Keuffel & Esser4139 Cooke Radio Rule1948496748USALinear25.0Wood1100MHF-252MHF-D100
Keuffel & Esser4139 Cooke Radio Rule1957363799USALinear25.0Wood1110MHF-250MHF-D100
Keuffel & Esser4139 Cooke Radio Rule1958452405USALinear25.0Wood1100MHF-251MHF-D100
Keuffel & Esser4139 Cooke Radio Rule1962775559USALinear25.0Wood1101MHF-584Display0
Keuffel & Esser4135 Power Computing1932361628USALinear12.5Wood1100MHF-260MHF-D100
Keuffel & Esser4133 Mannheim Roy Lance Electrican's1922347 EndUSALinear20.0Wood0000MHF-254MHF-D100
Keuffel & Esser4110 Power Trig1940800046USALinear33.5Wood0000MHF-99MHF-D131
Keuffel & Esser4104 Special Production Slide Rule of Military Use1955044175USALinear50.0Wood0000MHF-291MHF-D70
Keuffel & Esser4102 Surveyor's192362 endUSALinear50.0Wood1010MHF-246MHF-D90
Keuffel & Esser4102 Surveyor's192541498USALinear50.0Wood1100MHF-247MHF-D90
Keuffel & Esser4101 Mannheim Stadia191446 endUSALinear50.0Wood0100MHF-243MHF-D90
Keuffel & Esser4101 Mannheim Stadia1923130 endUSALinear50.0Wood0100MHF-244MHF-D90
Keuffel & Esser4100 Mannheim Stadia1957290831USALinear25.0Wood0100MHF-240MHF-D90
Keuffel & Esser4100 Mannheim Stadia1957230106USALinear25.0Wood0100MHF-239MHF-D90
Keuffel & Esser4100 Mannheim Stadia1958433578USALinear25.0Wood0100MHF-241MHF-D90
Keuffel & Esser4098A Mannheim "Pocket"194348232USALinear12.5Plastic0100MHF-83MHF-D31
Keuffel & Esser4098A Mannheim "Pocket"194395097USALinear12.5Plastic0110MHF-82MHF-D31
Keuffel & Esser4098 Mannheim "EverThere"193518425USALinear12.5Plastic0100MHF-80MHF-D31
Keuffel & Esser4098 Mannheim "EverThere"193532162USALinear12.5Plastic0100MHF-79MHF-D31
Keuffel & Esser4097D Mannheim Ever-There194489125USALinear12.5Paper0101MITMIT0
Keuffel & Esser4097D Mannheim Ever-There1944019432 John W. FutralUSALinear12.5Plastic0100MHF-89MHF-D31
Keuffel & Esser4097D Mannheim Ever-There1946146320 U.S. Electrical Motors Inc.USALinear12.5Plastic0100MHF-90MHF-D31
Keuffel & Esser4097D Mannheim Ever-There1954105130USALinear12.5Plastic0110MHF-88MHF-D31
Keuffel & Esser4097C Mannheim Ever-There1943009962USALinear12.5Plastic0110MHF-87MHF-D31
Keuffel & Esser4097C Mannheim Ever-There194327705USALinear12.5Plastic0110MHF-86MHF-D31
Keuffel & Esser4097B Merchant's Ever-There194364232USALinear12.5Plastic0100MHF-84MHF-D31
Keuffel & Esser4097B Merchant's Ever-There1954033393USALinear12.5Plastic0110MHF-85MHF-D31
Keuffel & Esser4095-3 Merchant's1928253609USALinear25.0Wood1100MHF-237MHF-D90
Keuffel & Esser4095-1 Merchant's1927130339USALinear12.5Wood1000MHF-234MHF-D90
Keuffel & Esser4095 Merchant's192114 endUSALinear25.0Wood1000MHF-235MHF-D90
Keuffel & Esser4094 Merchant's1935561521USALinear25.0Wood0100MHF-228MHF-D90
Keuffel & Esser4094 Merchant's1950590046USALinear25.0Wood0100MHF-229MHF-D90
Keuffel & Esser4093-3 Log Log Vector1935521109USALinear25.0Wood1100MHF-200MHF-D60
Keuffel & Esser4093-3 Log Log Vector1936548842USALinear25.0Wood1100MHF-201MHF-D60
Keuffel & Esser4092-5 Log Log192362988USALinear50.0Wood1010MHF-205MHF-D70
Keuffel & Esser4092-3 Log Log (Tabbed Cursor)1936400616USALinear25.0Wood1100MHF-173MHF-D50
Keuffel & Esser4092-3 Log Log19228013USALinear25.0Wood1100MHF-174MHF-D50
Keuffel & Esser4092-3 Log Log19228990 24S endUSALinear25.0Wood1100MHF-170MHF-D50
Keuffel & Esser4092-3 Log Log1923130851USALinear25.0Wood1000MHF-172MHF-D50
Keuffel & Esser4092-3 Log Log1925118377USALinear25.0Wood1100MHF-176MHF-D50
Keuffel & Esser4092-3 Log Log1936339820USALinear25.0Wood1100MHF-171MHF-D50
Keuffel & Esser4092-3 Log Log1936405149USALinear25.0Wood1100MHF-175MHF-D50
Keuffel & Esser4092-3 Log Log1936504659USALinear25.0Wood1100MHF-177MHF-D50
Keuffel & Esser4092 Log Log (Column Cursor)191421 endUSALinear25.0Wood1000MHF-165MHF-D50
Keuffel & Esser4092 Log Log (Column Cursor)1914141 endUSALinear25.0Wood1000MHF-164MHF-D50
Keuffel & Esser4092 Log Log (Clamshell Cursor)191319x endUSALinear25.0Wood1100MHF-162MHF-D50
Keuffel & Esser4092 Log Log (Clamshell Cursor)1913142 endUSALinear25.0Wood1000MHF-163MHF-D50
Keuffel & Esser4092 Log Log191486 endUSALinear25.0Wood0101MHF-169MHF-D50
Keuffel & Esser4092 Log Log1921187 endUSALinear25.0Wood1001MHF-167MHF-D50
Keuffel & Esser4092 Log Log1921131 endUSALinear25.0Wood1100MHF-166MHF-D50
Keuffel & Esser4092 Log Log192179 endUSALinear25.0Wood1100MHF-168MHF-D50
Keuffel & Esser4091-3 Log Log DeciTrig, (I Beam)1934455753USALinear25.0Wood1100MHF-181MHF-D50
Keuffel & Esser4091-3 Log Log DeciTrig1933456584USALinear25.0Wood1100MHF-179MHF-D50
Keuffel & Esser4091-3 Log Log DeciTrig1934474048USALinear25.0Wood1100MHF-180MHF-D50
Keuffel & Esser4090-3 Log Log Trig1934470428USALinear25.0Wood1100MHF-178MHF-D50
Keuffel & Esser4088-5 Polyphase192144 endUSALinear50.0Wood1100MHF-140MHF-D110
Keuffel & Esser4088-5 Polyphase192163 endUSALinear50.0Wood1101MHF-575Display0
Keuffel & Esser4088-5 Polyphase192111 EndUSALinear50.0Wood0100MHF-139MHF-D110
Keuffel & Esser4088-5 Polyphase192354790USALinear50.0Wood1001MHF-607MHF-D110
Keuffel & Esser4088-3 Polyphase (Metal Cursor)1915165 endUSALinear25.0Wood1001MHF-135MHF-D40
Keuffel & Esser4088-3 Polyphase (I-Beam Cursor)1938382044USALinear25.0Wood1101MHF-137MHF-D40
Keuffel & Esser4088-3 Polyphase (Column Cursor)191431 endUSALinear25.0Wood1100MHF-134MHF-D40
Keuffel & Esser4088-3 Polyphase (Column Cursor)191588 x endUSALinear25.0Wood1100MHF-133MHF-D40
Keuffel & Esser4088-3 Polyphase1921593 endUSALinear25.0Wood0010MHF-574Display0
Keuffel & Esser4088-3 Polyphase192377733USALinear25.0Wood1100MHF-138MHF-D40
Keuffel & Esser4088-3 Polyphase192577086USALinear25.0Wood1100MHF-136MHF-D40
Keuffel & Esser4088-2 Polyphase (Metal Cursor)191563 endUSALinear20.0Wood0100MHF-131MHF-D40
Keuffel & Esser4088-2 Polyphase (Column Cursor)191470 endUSALinear20.0Wood1101MHF-130MHF-D40
Keuffel & Esser4088-2 Polyphase192838 endUSALinear20.0Wood1100MHF-274MHF-D40
Keuffel & Esser4088-2 Polyphase1928179874USALinear20.0Wood1101MHF-132MHF-D40
Keuffel & Esser4088-2 Polyphase1929241354USALinear20.0Wood0110MHF-573Display0
Keuffel & Esser4088-1 Polyphase192293 endUSALinear12.5Wood1100MHF-124MHF-D40
Keuffel & Esser4088-1 Polyphase192413 endUSALinear12.5Wood1100MHF-125MHF-D40
Keuffel & Esser4088-1 Polyphase1929224775USALinear12.5Wood1101MHF-127MHF-D40
Keuffel & Esser4088-1 Polyphase1929298444USALinear12.5Wood1100MHF-129MHF-D40
Keuffel & Esser4088-1 Polyphase1929221666USALinear12.5Wood1100MHF-572Display0
Keuffel & Esser4088-1 Polyphase1929191776USALinear12.5Wood1100MHF-126MHF-D40
Keuffel & Esser4088-1 Polyphase1933362571USALinear12.5Wood1000MHF-128MHF-D40
Keuffel & Esser4087T Polyphase (Clamshell Cursor)191627 endUSALinear50.0Wood1010MHF-780MHF-D30
Keuffel & Esser4087 Polyphase (Column Cursor)191411 endUSALinear50.0Wood1100MHF-119MHF-D30
Keuffel & Esser4087 Polyphase191643 endUSALinear50.0Wood1000MHF-161MHF-D30
Keuffel & Esser4087 Polyphase191641 endUSALinear50.0Wood1010MHF-120MHF-D30
Keuffel & Esser4087 Polyphase191641 endUSALinear50.0Wood1010MHF-121MHF-D30
Keuffel & Esser4085C1914On 4087 Column CursorUSAMagnifier0.0Metal0000MHF-554MHF-D30
Keuffel & Esser4085C1914On 4092 Column CursorUSAMagnifier0.0Metal0000MHF-555MHF-D50
Keuffel & Esser4085B1922Early w/ N4053-3F 472xUSAMagnifier0.0Metal0000MHF-551MHF-D21
Keuffel & Esser4085B1922Early w/ N4053-2 68048USAMagnifier0.0Metal0000MHF-550MHF-D21
Keuffel & Esser4085A1925Early w/ 4031 sn 97196USAMagnifier0.0Metal0000MHF-558Cabinet0
Keuffel & Esser4083-5 Log Log Vector1943945538USALinear50.0Wood1100MHF-213MHF-D70
Keuffel & Esser4083-3 Log Log Vector1946257986USALinear25.0Wood1111MHF-202MHF-D60
Keuffel & Esser4083-3 Log Log Vector1949534971USALinear25.0Wood1101MHF-570Display0
Keuffel & Esser4083 Polyphase (Column Cursor)191542 EndUSALinear40.0Wood1100MHF-118MHF-D30
Keuffel & Esser4082-3 Radio Special1940834533 Naval TR. School 299USALinear25.0Wood1100MHF-257MHF-D100
Keuffel & Esser4082-3 Radio Special1940867096USALinear25.0Wood1100MHF-258MHF-D100
Keuffel & Esser4081-5 Log Log Decitrig1954976246USALinear50.0Wood1000MHF-210MHF-D70
Keuffel & Esser4081-5 Log Log Decitrig19555156USALinear50.0Wood1100MHF-211MHF-D70
Keuffel & Esser4081-3 Log Log Decitrig1949690721USALinear25.0Wood1001MHF-187MHF-D60
Keuffel & Esser4081-3 Log Log Decitrig1955859163USALinear25.0Wood1100MHF-188MHF-D60
Keuffel & Esser4080-5 Log Log Trig1946317656USALinear50.0Wood1100MHF-209MHF-D70
Keuffel & Esser4080-3 Log Log Trig1935559197USALinear25.0Wood1100MHF-182MHF-D50
Keuffel & Esser4080-3 Log Log Trig1946296511USALinear25.0Wood1100MHF-567Display0
Keuffel & Esser4080-3 Log Log Trig1950669436USALinear25.0Wood1100MHF-183MHF-D50
Keuffel & Esser4071T Polyphase Trig (Column Cursor)191499 endUSALinear25.0Wood1000MHF-117MHF-D31
Keuffel & Esser4071T Polyphase Trig (Clamshell Cursor)191277 endUSALinear25.0Wood1100MHF-115MHF-D31
Keuffel & Esser4071T Polyphase Trig191582 endUSALinear25.0Wood1100MHF-116MHF-D31
Keuffel & Esser4071-3S Polyphase Decitrig1958186059USALinear25.0Wood1111MHF-153MHF-D40
Keuffel & Esser4071-3 Polyphase Decitrig1944106905USALinear25.0Wood1100MHF-151MHF-D40
Keuffel & Esser4071-3 Polyphase Decitrig1946292228USALinear25.0Wood1110MHF-152MHF-D40
Keuffel & Esser4071 Polyphase1915107 endUSALinear25.0Wood1100MHF-113MHF-D31
Keuffel & Esser4070-3 Polyphase Trig1939705222USALinear25.0Wood1100MHF-150MHF-D40
Keuffel & Esser4070-3 Polyphase Trig1952889486 Arthur I. McRaeUSALinear25.0Wood1100MHF-149MHF-D40
Keuffel & Esser4068 Duplex19069 endUSALinear20.0Wood1100MHF-111Cabinet0
Keuffel & Esser4065T Polyphase Trig191689 endUSALinear20.0Wood1101MHF-112MHF-D31
Keuffel & Esser4061T Polyphase Trig191628 endUSALinear12.5Wood1101MHF-110MHF-D31
Keuffel & Esser4061 Polyphase Trig191681 endUSALinear12.5Wood1101MHF-588MHF-D31
Keuffel & Esser4059 Beginner's Slide Rule1939USALinear20.0Wood0000MHF-273MHF-D11
Keuffel & Esser4058W Mannheim Beginner's1934USALinear25.0Wood0010MHF-26MHF-D11
Keuffel & Esser4058W Mannheim Beginner's1943USALinear25.0Wood0100MHF-29MHF-D11
Keuffel & Esser4058W Mannheim Beginner's1943USALinear25.0Wood0000MHF-585Display0
Keuffel & Esser4058W Mannheim Beginner's1943USALinear25.0Wood0100MHF-28MHF-D11
Keuffel & Esser4058W Mannheim Beginner's1943USALinear25.0Wood0100MHF-27MHF-D11
Keuffel & Esser4058W Mannheim Beginner's1959USALinear25.0Wood0100MHF-589MHF-D11
Keuffel & Esser4058D Beginner’s1942USALinear25.0Wood0010MHF-549MHF-D11
Keuffel & Esser4058C Beginner's1941USALinear25.0Wood0100MHF-25MHF-D11
Keuffel & Esser4058C Beginner's1941USALinear25.0Wood0100MHF-24MHF-D11
Keuffel & Esser4058C Beginner's1941USALinear25.0Wood0100MHF-23MHF-D11
Keuffel & Esser4058 Mannheim Student's1915USALinear25.0Wood0010MHF-590MHF-D11
Keuffel & Esser4058 Mannheim Student's1922USALinear25.0Wood0000MHF-22MHF-D11
Keuffel & Esser4058 Mannheim Student's1922USALinear25.0Wood0010MHF-21MHF-D11
Keuffel & Esser4056 Favorite Mannheim Type 1192263 EndUSALinear25.0Wood0100MHF-548MHF-D31
Keuffel & Esser4056 Favorite Mannheim1949758469USALinear25.0Wood0100MHF-95MHF-D31
Keuffel & Esser4055 Favorite Mannheim1936524406USALinear25.0Wood0110MHF-93MHF-D31
Keuffel & Esser4055 Favorite Mannheim1937625594USALinear25.0Wood0110MHF-94MHF-D31
Keuffel & Esser4054 Polyphase Mannheim1948446303USALinear25.0Wood0100MHF-96MHF-D31
Keuffel & Esser4054 Favorite1914429 endUSALinear25.0Wood0100MHF-92MHF-D31
Keuffel & Esser4054 Favorite1914623 endUSALinear25.0Wood0100MHF-91MHF-D31
Keuffel & Esser4053-5 Polyphase Mannheim19212? endUSALinear50.0Wood0000MHF-553MHF-D110
Keuffel & Esser4053-5 Polyphase Mannheim192141 endUSALinear50.0Wood0000MHF-538MHF-D110
Keuffel & Esser4053-5 Polyphase Mannheim1958480009USALinear50.0Wood0100MHF-106MHF-D110
Keuffel & Esser4053-3F Polyphase Mannheim1922427x endUSALinear25.0Wood0100MHF-59MHF-D21
Keuffel & Esser4053-3 Polyphase Mannheim, Metal Cursor1915386USALinear25.0Wood0100MHF-55MHF-D21
Keuffel & Esser4053-3 Polyphase Mannheim1912794 endUSALinear25.0Wood0100MHF-53MHF-D21
Keuffel & Esser4053-3 Polyphase Mannheim1913106x end, Ed ChamberlianUSALinear25.0Wood0100MHF-54MHF-D21
Keuffel & Esser4053-3 Polyphase Mannheim1921317 X end & 12 endUSALinear25.0Wood0100MHF-56MHF-D21
Keuffel & Esser4053-3 Polyphase Mannheim1921114 endUSALinear25.0Wood0100MHF-58MHF-D21
Keuffel & Esser4053-3 Polyphase Mannheim192121 endUSALinear25.0Wood0100MHF-57MHF-D21
Keuffel & Esser4053-3 Polyphase Mannheim1921862 endUSALinear25.0Wood0100MHF-565Display0
Keuffel & Esser4053-2 Polyphase Mannheim1914959 end - Conrad ShureUSALinear20.0Wood0100MHF-597MHF-D21
Keuffel & Esser4053-2 Polyphase Mannheim191460 endUSALinear20.0Wood0100MHF-48MHF-D21
Keuffel & Esser4053-2 Polyphase Mannheim192211 endUSALinear20.0Wood0100MHF-49MHF-D21
Keuffel & Esser4053 Polyphase Mannheim190986X endUSALinear25.0Wood0100MHF-52MHF-D11
Keuffel & Esser4053 Polyphase Mannheim1910571 endUSALinear25.0Wood0000MHF-51MHF-D21
Keuffel & Esser4051 Mannheim190922 endUSALinear50.0Wood0011MHF-47MHF-D110
Keuffel & Esser4051 Mannheim1914198 endUSALinear50.0Wood0000MHF-43MHF-D110
Keuffel & Esser4051 Mannheim1914195 endUSALinear50.0Wood0100MHF-44MHF-D110
Keuffel & Esser4051 Mannheim19225 endUSALinear50.0Wood0100MHF-46MHF-D110
Keuffel & Esser4051 Mannheim192254 endUSALinear50.0Wood0101MHF-45MHF-D110
Keuffel & Esser4045 Mannheim192226 EndUSALinear40.0Wood0001MHF-41MHF-D111
Keuffel & Esser4045 Mannheim192285 EndUSALinear40.0Wood0000MHF-42MHF-D111
Keuffel & Esser4045 Mannheim192235 EndUSALinear40.0Wood0001MHF-40MHF-D111
Keuffel & Esser4045 Mannheim192231 endUSALinear40.0Wood0000MHF-545MHF-D111
Keuffel & Esser4041F Mannheim1914610 endUSALinear25.0Wood0100MHF-12MHF-D11
Keuffel & Esser4041 Mannheim (Metal Cursor)191553 endUSALinear25.0Wood0000MHF-16MHF-D11
Keuffel & Esser4041 Mannheim19143 endUSALinear25.0Wood0100MHF-15MHF-D11
Keuffel & Esser4041 Mannheim1914217 endUSALinear25.0Wood0000MHF-14MHF-D11
Keuffel & Esser4041 Mannheim1914606 endUSALinear25.0Wood0001MHF-595MHF-D11
Keuffel & Esser4041 Mannheim1914280 endUSALinear25.0Wood0100MHF-13MHF-D11
Keuffel & Esser4041 Mannheim1928196998 T C LewisUSALinear25.0Wood0100MHF-539Rolltop1
Keuffel & Esser4035 Mannheim Dual-line Cursor1909106+ endUSALinear20.0Wood0101MHF-596MHF-D11
Keuffel & Esser4035 Mannheim1915451 endUSALinear20.0Wood0100MHF-11MHF-D11
Keuffel & Esser4035 Mannheim191530 endUSALinear20.0Wood0100MHF-10MHF-D11
Keuffel & Esser4032 Mannheim (Magnifier)190645 endUSALinear12.5Wood0100MHF-2Cabinet1
Keuffel & Esser4032 Mannheim (Chisel Point Magnifier)19002 72 endUSALinear12.5Wood0000MHF-1Cabinet1
Keuffel & Esser4031F Mannheim191234 endUSALinear12.5Wood0100MHF-3Cabinet1
Keuffel & Esser4031F Mannheim191532 endUSALinear12.5Wood0000MHF-5MHF-D11
Keuffel & Esser4031F Mannheim1915541 endUSALinear12.5Wood0100MHF-4MHF-D11
Keuffel & Esser4031 Mannheim1923193 endUSALinear12.5Wood0100MHF-6MHF-D11
Keuffel & Esser4031 Mannheim192492607USALinear12.5Wood0100MHF-7MHF-D11
Keuffel & Esser4031 Mannheim192495490USALinear12.5Wood0100MHF-8MHF-D11
Keuffel & Esser4031 Mannheim192597196USALinear12.5Wood0100MHF-9Cabinet1
Keuffel & Esser4017 Sperry's Pocket Calculator1941S714USACircular4.3Metal0000MHF-266Cabinet0
Keuffel & Esser4012 Thacher’s Calculating Instrument03980UKSpecial46.0Wood0010MHF-668Top Flat Files0
Keuffel & Esser4010 Stima Addiator195229577SwitzerlandAdditator0.0Metal0001MHF-271Cabinet1
Keuffel & Esser1744B Wm Cox Duplex, Dual Slide Chissel Point19009 sideGermanyLinear25.0Wood1100MHF-114Cabinet1
Keuffel & Esser / Acushnet Process CompanyYoung’s Specific Gravity & Compound Cost Calculator191350 End 31 SideUSASpecial12.5Wood0000MHF-666MHF-D131
Keuffel & Esser / ECCO CO.10000 Doric Polyphase1946USALinear12.5Plastic1101MHF-142MHF-D40
Keuffel & Esser ManualThe SRT Scale1955USAManual0.0Paper0000MHF-757MHF-D190
Keuffel & Esser ManualThe Polyphase Slide Rule No. N405319446391USAManual0.0Paper0000MHF-737MHF-D190
Keuffel & Esser ManualThe Polyphase Duplex Slide Rule No. 4088193860267-1940 SR 4088-3 382044USAManual0.0Paper0000MHF-718MHF-D190
Keuffel & Esser ManualThe Polar Planimeter19151276. i, a, ch. cM.USAManual0.0Paper0000MHF-726MHF-D190
Keuffel & Esser ManualThe Mannheim Slide Rule Complete Manual1903540-Ks-x-sy-hME., ed ChamberlainUSAManual0.0Paper0000MHF-730MHF-D190
Keuffel & Esser ManualThe Mannheim Slide Rule Complete Manual19171885. ch, o, co. sM.USAManual0.0Paper0000MHF-729MHF-D190
Keuffel & Esser ManualThe Mannheim Slide Rule Complete Manual19171608. s, a, cm. sM.USAManual0.0Paper0000MHF-732MHF-D190
Keuffel & Esser ManualThe Mannheim Slide Rule Complete Manual19171416. k, k, cx. sM.USAManual0.0Paper0000MHF-731MHF-D190
Keuffel & Esser ManualThe Mannheim Slide Rule193843343USAManual0.0Paper0000MHF-735MHF-D190
Keuffel & Esser ManualThe Mannheim and The Duplex Slide Rules1909965, h. c c. k. aM. ElUSAManual0.0Paper0000MHF-716MHF-D190
Keuffel & Esser ManualThe Mannheim and The Duplex Slide Rules1909965, h. c c. k. aM. ElUSAManual0.0Paper0000MHF-717MHF-D190
Keuffel & Esser ManualThe Mannheim & Polyphase Slide Rules19202465. cc,h,ks. sM.USAManual0.0Paper0000MHF-734MHF-D190
Keuffel & Esser ManualThe Mannheim & Polyphase Slide Rules19223158. a, y, kk. hM.USAManual0.0Paper0000MHF-733MHF-D190
Keuffel & Esser ManualThe Ever-There Slide Rule No. 4097D194712644USAManual0.0Paper0000MHF-724MHF-D190
Keuffel & Esser ManualSuppl. Man. Cooke Radio No 41391942USAManual0.0Paper0000MHF-741MHF-D190
Keuffel & Esser ManualSlide Rules & Calculating Instruments19131030.ck. x, ca. sMUSACatalog0.0Paper0000MHF-682MHF-D190
Keuffel & Esser ManualSlide Rules & Calculating Instruments19304653-3 o,cc, ki, hM.USACatalog0.0Paper0000MHF-681MHF-D190
Keuffel & Esser ManualSlide Rules & Calculating Instruments194293034USACatalog0.0Paper0000MHF-683MHF-D190
Keuffel & Esser ManualPolyphase-Duplex Slide Rule19131023. k, x, ca. h M.USAManual0.0Paper0000MHF-715MHF-D190
Keuffel & Esser ManualPolyphase Slide Rule No. N4053194460247 2edUSAManual0.0Paper0000MHF-738MHF-D190
Keuffel & Esser ManualPolyphase No. 68 2063 Old 4187H195441671USAManual0.0Paper0000MHF-740MHF-D190
Keuffel & Esser ManualPolyphase Duplex Decitrig No. 68 2059 Old No. 4187X1947USAManual0.0Paper0000MHF-722MHF-D190
Keuffel & Esser ManualPolyphase Duplex Decitrig No. 68 2055 Old No. 4187U19627751USAManual0.0Paper0000MHF-719MHF-D190
Keuffel & Esser ManualPolyphase Duplex Decitrig No. 407119397241USAManual0.0Paper0000MHF-720MHF-D190
Keuffel & Esser ManualPolyphase Duplex Decitrig No. 407119397241USAManual0.0Paper0000MHF-721MHF-D190
Keuffel & Esser ManualPocket Slide Rules - Brochure1962USAManual0.0Paper0000MHF-747MHF-D190
Keuffel & Esser ManualPocket Slide Rules - Brochure1964USAManual0.0Paper0000MHF-746MHF-D190
Keuffel & Esser ManualPocket Slide Rule 4150-1 Instructions195063895USAManual0.0Paper0000MHF-758MHF-D190
Keuffel & Esser ManualPocket Slide Rule 4150-1 (Formerly 9050-1) Instructions195034161USAManual0.0Paper0000MHF-761MHF-D190
Keuffel & Esser ManualModern Polyphase No. 68 2061 Old 4187Y195229872USAManual0.0Paper0000MHF-739MHF-D190
Keuffel & Esser ManualMerchants’ Slide Rule 68 1775196023096-36C-1.5USAManual0.0Paper0000MHF-759MHF-D190
Keuffel & Esser ManualMerchants’ Pocket Slide Rule Instructions Manual No, 68 1791195013215USAManual0.0Paper0000MHF-762MHF-D190
Keuffel & Esser ManualLog Log Vector Slide Rule1930USAManual0.0Paper0000MHF-725MHF-D190
Keuffel & Esser ManualLog Log Duplex Vector No. N4083193934204+Suppl & SRT ScaleUSAManual0.0Paper0000MHF-726MHF-D190
Keuffel & Esser ManualLog Log Duplex Trig No. 4080194341097USAManual0.0Paper0000MHF-706MHF-D190
Keuffel & Esser ManualLog Log Duplex Trig N4080-3 194894542USAManual0.0Paper0000MHF-707MHF-D190
Keuffel & Esser ManualLog Log Duplex Slide Rule1926USAManual0.0Paper0000MHF-705MHF-D190
Keuffel & Esser ManualLog Log Duplex Slide Rule1926USAManual0.0Paper0001MHF-704MHF-D190
Keuffel & Esser ManualLog Log Duplex Decitrig No. N40811947USAManual0.0Paper0000MHF-712MHF-D190
Keuffel & Esser ManualLog Log Duplex Decitrig No. 68 2047195566992 in 68 1251 boxUSAManual0.0Paper0000MHF-755MHF-D60
Keuffel & Esser ManualLog Log Duplex Decitrig No. 68 2047195529244USAManual0.0Paper0000MHF-724MHF-D190
Keuffel & Esser ManualLog Log Duplex Decitrig No. 68 2047195545670USAManual0.0Paper0000MHF-713MHF-D190
Keuffel & Esser ManualLog Log Duplex Decitrig No. 408119427724USAManual0.0Paper0000MHF-714MHF-D190
Keuffel & Esser ManualLog Log Duplex Decitrig No. 4081194512,473.USAManual0.0Paper0000MHF-708MHF-D190
Keuffel & Esser ManualLog Log Duplex Decitrig No. 4081195572536 see K&E 4181-3 015574USAManual0.0Paper0000MHF-711MHF-D190
Keuffel & Esser ManualLog Log Duplex Decitrig No. 408119552310USAManual0.0Paper0000MHF-709MHF-D190
Keuffel & Esser ManualLog Log Duplex Decitrig No. 40811955USAManual0.0Paper0000MHF-710MHF-D190
Keuffel & Esser ManualLearning to Use the Slide Rule1961S24USAManual0.0Paper0000MHF-764MHF-D190
Keuffel & Esser ManualLearning to Use the Slide Rule1961S24-2USAManual0.0Paper0001MHF-763MHF-D190
Keuffel & Esser ManualK & E Price List, 42nd Edition195938478USACatalog0.0Paper0000MHF-680MHF-D190
Keuffel & Esser ManualK & E Price List, 37th Edition1928USACatalog0.0Paper0000MHF-703MHF-D190
Keuffel & Esser ManualK & E Catalog 43rd Edition, section Slide Rules Catalog 8 1962USACatalog0.0Paper0000MHF-678MHF-D190
Keuffel & Esser ManualK & E Catalog 42nd Edition, Part 11954Schaeffer, Hooton & WilsonUSACatalog0.0Paper0000MHF-677Bookcase0
Keuffel & Esser ManualK & E Catalog 42nd Edition1954Wm. C. Spinck, K&E SalesUSACatalog0.0Hard Cover0000MHF-676Bookcase0
Keuffel & Esser ManualK & E Catalog 40th Edition1944Copy No. 37075USACatalog0.0Hard Cover0000MHF-675Bookcase0
Keuffel & Esser ManualK & E Catalog 39th Interim Ed War Catalog1943R. W. PhippsUSACatalog0.0Hard Cover0000MHF-674Bookcase0
Keuffel & Esser ManualK & E Catalog 38th Edition1936K. C. FullerUSACatalog0.0Hard Cover0000MHF-673Bookcase0
Keuffel & Esser ManualK & E Catalog 37th Edition1927Emile TomlinUSACatalog0.0Hard Cover0000MHF-672Bookcase0
Keuffel & Esser ManualK & E Catalog 36th Edition1921USACatalog0.0Hard Cover0000MHF-671Bookcase0
Keuffel & Esser ManualK & E Catalog 35th Edition1915The Dodd CoUSACatalog0.0Hard Cover0000MHF-670Bookcase0
Keuffel & Esser ManualK & E Catalog 34th Edition1913L A Struigfield, Corning CalUSACatalog0.0Hard Cover0000MHF-669Bookcase0
Keuffel & Esser ManualJetlog and Decitrig An Instruction Manual195541604USAManual0.0Hard Cover0000MHF-685Bookcase0
Keuffel & Esser ManualInstructions for Use of Log Log Duplex Slide Rule19225009. ki, i, kh. cM.USAManual0.0Paper0000MHF-728MHF-D190
Keuffel & Esser ManualInst for Oper Ever-There Slide Rule No. 4097C193612,059. S, cc,, yay. HM.USAManual0.0Paper0000MHF-760MHF-D190
Keuffel & Esser ManualHow To Take Care Of Your Slide Rule1962S14-5 3 copiesUSAManual0.0Paper0000MHF-745MHF-D190
Keuffel & Esser ManualHow to Choose a Slide Rule1940USACatalog0.0Paper0000MHF-743MHF-D190
Keuffel & Esser ManualElementary Instructions194449124USAManual0.0Paper0000MHF-727MHF-D190
Keuffel & Esser ManualEducational Supplies & Equipment196615189-115K-45USACatalog0.0Paper0010MHF-679MHF-D190
Keuffel & Esser ManualDecimal Equivalents of Fractions / Calendar1948USAManual0.0Paper0000MHF-748MHF-D190
Keuffel & Esser ManualDeci-Lon An Instruction Manual196252387USAManual0.0Hard Cover0000MHF-687Bookcase0
Keuffel & Esser ManualDeci-Lon An Instruction Manual196291008USAManual0.0Hard Cover0000MHF-686Bookcase0
Keuffel & Esser ManualCooke Radio Slide Rule A Suppl. Man.194211,65502. K&E 4139, SN 313895USAManual0.0Paper0000MHF-742MHF-D190
Keuffel & Esser ManualA slide rule with intellect and .. horse sense195691264USACatalog0.0Paper0000MHF-744MHF-D190
Keuffel & Esser ManualA Self Instruction Manual195550007USAManual0.0Hard Cover0000MHF-684Bookcase0
Kolesch & Co.Midget1924USALinear12.5Wood0000MHF-375MHF-D200
KontrolpriborKL-1 JUBILEUM 19671967USSRCircular3.5Metal0001MHF-269Cabinet0
KontrolpriborKL-11966USSRCircular3.5Metal0010MHF-270Cabinet0
LafayetteF-428 Log Log Duplex Deci-Trig1961K.S-3JapanLinear25.0Wood1100MHF-388MHF-D230
Lafayette99-71029 VectorLog1961SS-2JapanLinear25.0Wood1100MHF-389MHF-D230
Lawrence EngineeringUS Aviation Underwriters, Inc.1944USALinear29.3Wood0000David RanceDavid Rance0
Lawrence EngineeringMadison Speed Calculator1947USASpecial17.8Wood0000MHF-342MHF-D220
Lawrence EngineeringEpperson TV Coverage Calculator1952USASpecial24.0Wood0000MHF-343MHF-D220
Lawrence EngineeringDeYOE Slide Rule0USASpecial25.0Wood0010MHF-344MHF-D220
Lawrence EngineeringB.F. Grizzle Water Line Capacity1944USASpecial19.5Wood0100MHF-339MHF-D220
Lawrence EngineeringB. F. Grizzle Instructions for Water Line Capacity Slide Rule1944USAManual19.5Paper0000MHF-754MHF-D220
Lawrence Engineering8-L Copper Wire Selector1946USASpecial16.5Wood0100MHF-338MHF-D220
Lawrence Engineering8-B0USALinear19.0Wood0001MHF-331MHF-D220
Lawrence Engineering8-B1937USALinear19.0Wood0010MHF-332MHF-D220
Lawrence Engineering409 U. S. Navy0USALinear25.0Wood0000MHF-340MHF-D220
Lawrence Engineering10-D Lawrence Lumber Calculator0USASpecial24.7Wood0010MHF-336MHF-D220
Lawrence Engineering10-D Eureka Millwork Lumber Calculator0USASpecial24.7Wood0010MHF-337MHF-D220
Lawrence Engineering10-B0USALinear25.0Wood0000MHF-333MHF-D220
Lawrence Engineering10-B1940USALinear25.0Wood0010MHF-578Display0
Lawrence Engineering ServiceLawrence “Secret Code” Rule1939USASpecial18.0Wood0000MHF-485MHF-D220
Lightning Adding Machine0USAAddometer20.0Metal0010MHF-479MHF-D250
Lutz252 U.S.1964ss-9JapanLinear25.0Wood1100MHF-393MHF-D230
M. H. MearGas Flow Calculator Model 30UKSpecial19.5Plastic0100MHF-526MHF-D180
Maurice DamienUniversal Ruler (Regle A Calculus)1930FranceLinear25.0Metal0100MHF-625MHF-D230
Merchant AccountSimplex011978USAAdding Machine0.0Metal0100MHF-773Workshop0
MonroeCalculator Model K1925USAAdding Machine0.0Metal0000MHF-770Workshop0
Monroe Manufacturing Co.Monroe Slide Rule Pencil0USAJewelry7.4Metal0010MHF-647MHF-Box10
Moonstick Co.Moonstick2001USASpecial0.0Plastic0010MHF-461MHF-D250
NovotniPaper Box Board Rule0USASpecial16.0Wood0000MHF-424MHF-D240
NovotniNovotni Weight Rule0USASpecial33.5Plastic0000MHF-421MHF-D240
NovotniFeed Slide Rule1955USASpecial25.5Wood0010MHF-446MHF-D240
Novotni Novotni Weight Slide Rule1920USASpecial33.5Plastic0000MHF-422MHF-D240
Ohio State UniversitySlide Rule Manual1947USAManual0.0Paper0000MHF-749MHF-D190
Otis-KingL 430/4291923A8302UKCylindrical0.0Metal0000MHF-529Cabinet0
Otis-KingL 430/4291957S6877UKCylindrical26.0Metal0110MHF-531Cabinet0
Otis-KingL 430/4291969T1415UKCylindrical26.0Metal0010MHF-537MHF-D90
Otis-KingL 430/4291974B1230UKCylindrical26.0Metal0010MHF-530MHF-D90
Otis-KingK 423/4141970X4113UKCylindrical26.0Metal0010MHF-528MHF-D90
P.I.C. / A. G. Thornton Ltd.172 /PC170UKLinear25.0Wood0011MHF-616MHF-D230
P.I.C. / A. G. Thornton Ltd.131 Electro0UKLinear25.0Wood0101MHF-398MHF-D230
Perrygraf Corp.Varian NMR Correlator1973USASpecial21.0Paper0000MHF-633MHF-D240
Perrygraf Corp.Hewlett-Packard Packard Vector Impedance Calculator19667 eachUSASpecial21.0Paper0000MHF-429MHF-D240
Perrygraf Corp.Doty Scientific Vector Impedance Calculator1971USASpecial21.0Paper0000MHF-632MHF-D240
Pery Graf Corp.Roebling "Traction Steel" Elevator Rope Calculator1944USASpecial24.0Paper0100MHF-448MHF-D240
PickettTrig, Training(120)1962USALinear25.0Plastic0100MHF-298MHF-D210
PickettN904-ES Trig & Decimal Keeper Speed Rule196266/123 75888USALinear25.0Metal1110MHF-320MHF-D210
PickettN902-ES Simplex Trig195939/41 SlideUSALinear25.0Metal0100MHF-311MHF-D210
PickettN902-ES Simplex Trig196066/41 SlideUSALinear25.0Metal0100MHF-310MHF-D210
PickettN901-ES Simplex196065USALinear25.0Metal0100MHF-306MHF-D210
PickettN600-ES Log Log Speed Rule1975USALinear12.5Metal1110MHF-296MHF-D210
PickettN515-T Electronic1962349USALinear25.0Metal0100MHF-305MHF-D210
PickettN515-T Electronic1966USALinear25.0Metal0100MHF-304MHF-D210
PickettN500-ES HI Log/Log1962PT 2 Rule packUSALinear25.0Metal1110MHF-322MHF-D210
PickettN500-ES HI Log/Log1964C1962USALinear25.0Wood1100MHF-303MHF-D210
PickettN4P-ES Vector-Type Log Log1966USALinear12.5Wood1110MHF-599MHF-D210
PickettN4-T Vector-Type LOG LOG1964USALinear25.0Metal1100MHF-600MHF-D210
PickettN4-ES Vector-Type LOG LOG196274 272USALinear25.0Metal1100MHF-319MHF-D210
PickettN4-ES Vector-Type LOG LOG1964USALinear25.0Metal1100MHF-318MHF-D210
PickettN3P-ES Power Log Exponential1966USALinear12.5Wood1100MHF-294MHF-D210
PickettN300-ES Log Log1962PT 2 Rule PackUSALinear12.5Metal1110MHF-323MHF-D210
PickettN3-ES Power Log Exponential1975USALinear25.0Metal1001MHF-316MHF-D210
PickettN200-T Trig196138USALinear12.6Metal1100MHF-289MHF-D210
PickettN200-ES Trig1975USALinear12.5Metal1100MHF-601MHF-D210
PickettN200-ES Trig1975USALinear12.5Metal1100MHF-290MHF-D210
PickettN1010-T Trig1966945239USALinear25.0Metal1110MHF-321MHF-D210
PickettN1010-ES Trig Demonstration1964USALinear100.0Wood1000MHF-606Shop Wall0
PickettN1010-ES Trig1960USALinear25.0Metal1100MHF-314MHF-D210
PickettN1010-ES Trig1975USALinear25.0Metal1000MHF-605MHF-D210
Pickett905-ES "A" Texas Speed Rule1962119USALinear25.0Metal1100MHF-312MHF-D210
Pickett905-ES "A" Texas Speed Rule1962119USALinear25.0Metal1110MHF-324MHF-D210
Pickett903-T Pickett-Trig Conversion195747USALinear25.0Metal0100MHF-604MHF-D210
Pickett902-T Simplex Trig195539/41 SlideUSALinear25.0Metal0100MHF-307MHF-D210
Pickett902-T Simplex Trig195839/41USALinear25.0Metal0100MHF-308MHF-D210
Pickett902-T Simplex Trig1966USALinear25.0Metal0100MHF-309MHF-D210
Pickett901 Simplex195520USALinear25.0Metal0100MHF-603MHF-D210
Pickett800-T Log Log1969USALinear25.0Metal0100MHF-602MHF-D210
Pickett700 U. S. Air Force Aerial Photo Slide Rule Type A-2195459USALinear12.5Metal0100MHF-293MHF-D210
Pickett61 Promotional Midlan-Ross Corporation1957USALinear12.5Paper0100MHF-285MHF-D210
Pickett4 Deci Log Log1950USALinear25.0Metal0100MHF-317MHF-D210
Pickett300 Log195242 SlideUSALinear12.5Metal1000ISRMISRM0
Pickett300 Log195542 Z SlideUSALinear12.5Metal1100MHF-292MHF-D210
Pickett200 Trig195338 National Carbon CompanyUSALinear12.5Metal1000MHF-287MHF-D210
Pickett200 Trig195939 SlideUSALinear12.5Metal1100MHF-288MHF-D210
Pickett20 Basic1955USALinear12.5Metal0110MHF-297MHF-D210
Pickett2 Deci Log Log195017133USALinear25.0Metal1100MHF-315MHF-D210
Pickett160C-T Microline1975MexicoLinear12.5Plastic0110MHF-295MHF-D210
Pickett160 Microline1975USALinear12.5Plastic0100MHF-286MHF-D210
Pickett140 Microline1975MexicoLinear25.0Plastic1100MHF-302MHF-D210
Pickett14 U.S. Military Slide Rule1962USALinear25.0Metal1100MHF-467MHF-D250
Pickett121 Microline1970USALinear25.0Plastic0100MHF-301MHF-D210
Pickett120 Simplex1962USALinear25.0Plastic0100MHF-299MHF-D210
Pickett120 Simplex1962USALinear25.0Plastic0010MHF-300MHF-D210
Pickett112C Metric Converter - Weight1975USACircular15.2Plastic0000MHF-328MHF-D220
Pickett112C Metric Converter - Liquid1975x2USACircular15.2Plastic0000MHF-330MHF-D220
Pickett112C Metric Converter - Liquid1975x2USACircular15.2Plastic0000MHF-329MHF-D220
Pickett108ES1975JapanCircular8.0Metal1100MHF-327MHF-D220
Pickett103-ES Mark-Up Calculator1975NOSUSACircular10.2Metal0100MHF-326MHF-D220
Pickett101C Dial Rule1975NOSUSACircular10.2Metal0100MHF-325MHF-D220
Pickett1000 Ortho-Phase1950Milo FreyUSALinear25.0Metal1000MHF-313MHF-D210
Pickett ManualModel 20USAManual0.0Paper0001MHF-751MHF-D190
Pickett ManualHow to use Trig Slide Rules1960MT-2USAManual0.0Paper0000MHF-765MHF-D220
Pickett ManualHow to use Trig Slide Rules1960M-12 RUSAManual0.0Paper0001MHF-691MHF-D220
Pickett ManualHow to use Trig Slide Rules1960M-12 RUSAManual0.0Paper0000MHF-693MHF-D220
Pickett ManualHow to use the TRIG Pickett Slide Rule1952USAManual0.0Paper0000MHF-692MHF-D220
Pickett ManualHow To Use the Model 1000 Slide Rule1948USAManual0.0Paper0000MHF-689MHF-D220
Pickett ManualHow to use Log Log Slide Rules1960Pull-3USAManual0.0Paper0000MHF-694MHF-D220
Pickett ManualHow to use Dual Base Slide Rule Exponential Ln-L Scales1959M-21USAManual0.0Paper0000MHF-690MHF-D220
Pickett ManualElectronics and Your Slide Rule Pt I - IV19653132 to 3135USAManual0.0Plastic0000MHF-695MHF-D220
Pratt & Whitney Aircraft - PerrygrafGas Turbine Computer1957USASpecial12.7Plastic0100MHF-524MHF-D180
Publications Department - Raritan ArsenalTM 9-526 Technical Manual Graphical Firing Tables1943RAPD13DEC43-95MUSAManual0.0Paper0000MHF-699MHF-D250
Puregas Equipment Corp.Gas Pressurization Computer PEC 5310USASpecial25.0Plastic0100MHF-437MHF-D240
Radiac & Nuclear YieldABC-M1A1 & ABC-M4A11990USASpecial10.0Plastic0100MHF-512MHF-D170
Rand Drill CompanyCox's Compressed-Air Discharge / Pump Computer1897USASpecial11.0Paper0001MHF-491MHF-D161
Random Research, Inc.Harvard Logarithmic Selector1973USASpecial12.7Plastic0000MHF-514MHF-D160
Ray E. DennisGraphics En. Dr. 3260 Rle No. 4, t=U^1.3M1948HandmadeUSASpecial31.0Wood0000MHF-460MHF-D250
RCASatellite Location Chart0USASpecial22.0Plastic1001MHF-462MHF-D250
Regal PrecisionThe Regal Presision Calaulator Profit0USASpecial15.0Metal0000MHF-458MHF-D240
RelayDCB-5171954CS-3JapanLinear12.5Wood1100MHF-612MHF-D230
Reliable Typewriter & Adding Machine Co.Addometer B0USAAddometer29.0Metal0100MHF-478MHF-D250
Reliable Typewriter & Adding Machine Co.Addometer0USAAddometer29.0Metal0010MHF-477MHF-D250
Reo Motor Car CompanyTruck Performance Slide Rule1933USASpecial20.2Plastic0100MHF-449MHF-D240
Roncari IndustriesConcrete Volume Calculator0USANo Value12.5Plastic0000MHF-453MHF-D240
Royal Dutch Engineering WorksPipe & pump0HollandSpecial12.0Plastic0100MHF-519MHF-D160
S.R. & S.E. Co. IncBituminous-Mix Slide Rule1944USASpecial30.4Wood0000MHF-439MHF-D240
Sama & Etani600-OP Projection1969JapanCircular13.0Plastic0100MHF-500MHF-D160
Sama & Etani600 Michael O'Leary Memorial Edition2003JapanCircular6.0Plastic0100MHF-499MHF-D160
Sama & Etani600 Hewitt-Robins1969JapanCircular6.0Plastic0100MHF-498MHF-D160
Sans & Streiffe3110J.S-2JapanLinear25.0Wood0100MHF-394MHF-D230
Schall & SonSlide Rule for calculating X Ray Exposures1912UKSpecial25.7Wood0000MHF-442MHF-D240
Schick IncorporatedStadimeter19433501-1943USAOther0.0Metal0100MHF-776Bookcase-20
Schuykill Paper Co.Paper Slide Rule0USASpecial35.5Wood0000MHF-426MHF-D240
Scientific Instruments Co.1610-D1963JapanCircular11.7Metal1100MHF-507MHF-D160
Sears, Roebuck and Co.Merchant's Calculator1946USALinear28.6Wood0000MHF-377MHF-D200
Slide Chart Corp.Fan & Blower RPM Change Converter1976USACircular15.5Paper0000MHF-525MHF-D180
Slide Rule & Scale Eng. Co.Brick & Tile Computing0USALinear29.8Wood0100MHF-455MHF-D240
Sports Car PressA Guide to Rallying1957Larry ReidUSAManual0.0Paper0000MHF-510MHF-D170
Sterling685Precision0USALinear25.0Plastic0101MHF-372MHF-D200
Sterling685 Precision0USALinear25.0Plastic0100MHF-370MHF-D200
Sterling685 Precision1971MHFUSALinear25.0Plastic0000MHF-371MHF-D200
Sterling684 Precision0USALinear25.0Plastic0000MHF-369MHF-D200
Sterling594 Decimal Trig Log-Log1965PSUSALinear25.0Plastic1100MHF-374MHF-D200
Sterling5941965USALinear25.0Plastic1110MHF-581Display0
Sterling5941972USALinear25.0Plastic1100MHF-373MHF-D200
Sterling5870USALinear12.5Plastic0000MHF-576Display0
Sterling565 Automatic Adding Machine0USAAddometer20.0Plastic0000MHF-473MHF-D250
Stevens Engineering CompanyRally Indicator Model 251959USASpecial23.0Plastic0100MHF-508MHF-D170
Stevens Engineering CompanyRally Indicator1959USASpecial15.0Plastic0100MHF-509MHF-D170
SwankTie Clip0USAJewelry3.6Plastic0000MHF-651MHF-Box10
SwankTie Clip0USAJewelry4.1Plastic0001MHF-652MHF-Box10
SwankTie Clip0USAJewelry4.1Metal0000MHF-650MHF-Box10
SwankTie Clip0USAJewelry4.1Metal0010MHF-649MHF-Box10
SwankMoney Clip0USAJewelry3.6Plastic0000MHF-648MHF-Box10
SylvaniaFlash Film Pencil0USAJewelry14.0Plastic0000MHF-653MHF-Box10
Tavernier - Gravet11-22 Péraux rule193934 / 32 EndFranceLinear25.0Wood0101SoldSold0
TeknoritTeknor NR 9 Energy, HP0SwedenCircular12.0Metal0000MHF-513MHF-D160
TeknoritTeknor NR 8 Temperature0SwedenCircular12.0Metal0000MHF-513MHF-D160
TeknoritTeknor NR 7 Pressure0SwedenCircular12.0Metal0000MHF-513MHF-D160
TeknoritTeknor NR 6 Surface0SwedenCircular12.0Metal0000MHF-513MHF-D160
TeknoritTeknor NR 4 Length mm0SwedenCircular12.0Metal0000MHF-513MHF-D160
TeknoritTeknor NR 3 Weight0SwedenCircular12.0Metal0000MHF-513MHF-D160
TeknoritTeknor NR 1 Volume0x2SwedenCircular12.0Metal0000MHF-513MHF-D160
The Art Engraving and Colortype CO1258 size reduction0USASpecial26.0Wood0000MHF-428MHF-D240
The B. F. Cummings Co.Check Perforator1922USAOther0.0Metal0000MHF-779Workshop0
The Cretex Companies, Inc.Sewer Design Slide Rule (Based on Kutter's Formula)1947USASpecial27.5Paper0100MHF-628MHF-D240
Thinkgeek1337 Nanoline2009ChinaLinear25.0Plastic1110MHF-378MHF-D200
Thomas S. AirevAutomotive Computing Slide Rule0USASpecial12.7Plastic0000MHF-450MHF-D240
ThorntonNautical 0552/11480UKLinear27.0Plastic1100MHF-463MHF-D250
U. S. ArmyDownwind Distance Slide Rule Chemical Weapons CTA 3-7-70GTA 3-7-3USASpecial12.6Paper0000MHF-511MHF-D170
U. S. ArmyDirection plotting0with Downwind Distance Slide RuleUSASpecial20.5Plastic0000MHF-523MHF-D180
UniqueLog Log Slide Rule0UKLinear25.3Wood0010MHF-397MHF-D230
Unique1140 Log Log0UKLinear12.7Wood0010MHF-396MHF-D230
UnknownUnknown0UKLinear10.0Wood0100MHF-615MHF-D230
UnknownTie CLip0USAJewelry5.0Plastic0010MHF-766MHF-Box10
UnknownTie Clip0USAJewelry5.0Plastic0000MHF-655MHF-Box10
UnknownTie Clip0USAJewelry6.5Plastic0000MHF-657MHF-Box10
UnknownTape Drive0USAJewelry3.6Metal0000MHF-664MHF-Box10
UnknownSector0UKSpecial15.0No Value0000MHF-559Cabinet0
UnknownInvestor's Stock Computer0USASpecial22.5Plastic0000MHF-457MHF-D240
UnknownCufflinks Sterling0USAJewelry0.0Metal0000MHF-654MHF-Box10
Unknown4" in/A-BC-D/cm SLT0JapanLinear10.0Wood0100MHF-380MHF-D230
Unknown Kitchen Slide Rule0USASpecial25.0Wood0000MHF-627MHF-D250
Unknown - Superior PipingTie Clip0USAJewelry3.6Plastic0010MHF-656MHF-Box10
UpjohnUSX 9557.00 Pregnancy Calculator1993USASpecial11.5Plastic0000MHF-516MHF-D160
UpjohnUSX 2833.00 Injection Calculator1995USASpecial10.0Plastic0000MHF-517MHF-D160
US ArmyM24 Howitzer 75mm19457674033USALinear28.0Wood0000MHF-470MHF-D250
Utilities Distributors, Inc.UDI Gas Slide Rule1946EAC 7-20-46USASpecial25.5Wood1100MHF-438MHF-D240
VernonTie Clip Sterling0USAJewelry4.0Metal0000MHF-661MHF-Box10
VernonTie Clip & Cufflinks0USAJewelry4.0Metal0000MHF-659 & AMHF-Box10
VernonTie Clip & Cufflinks0USAJewelry4.0Metal0000MHF-660 & AMHF-Box10
VernonCufflinks0USAJewelry0.0Metal0000MHF-658MHF-Box10
W & G432 Comprehensive 0AustraliaLinear25.0Wood0010MHF-617MHF-D230
W C Cox DevonportTimber0USALinear58.0Wood0000MHF-619MHF-D250
W. & L. E. GurleyCox Stadia Computer Cat. No. 31000USASpecial12.0Plastic0000MHF-492MHF-D160
W. & L. E. GurleyCox Stadia Computer1889USASpecial12.0Paper0000MHF-493MHF-D160
W.H.H.Vickers Rule Slide M.G. (AUST.) MK.I.0AustraliaSpecial15.0Metal0000MHF-781MHF-D250
Walter H. McKenna & Co. Inc.Tie Clip0USAJewelry3.0Metal0010MHF-662MHF-Box10
Walter H. McKenna & Co. Inc.Tie Clip0USAJewelry3.0Metal0000MHF-663MHF-Box10
Warren - Knight Co.1373B Wakco Weight Rule0USASpecial33.5Plastic0100MHF-420MHF-D240