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Mike Frey Slide Rules

Slide Rules and Other Things

Keuffel & Esser N4053-3 10″ Polyphase Mannheim – 012841 – 4185B Magnifier

Front

Gutter

Back

in Scale

Clark McCoy’s K&E Catalogs – 4053 information page

Catalog Number: MHF-66, Location: MHF-D2

Mike Frey Slide Rules

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