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Mike Frey Slide Rules

Slide Rules and Other Things

Keuffel & Esser 4054 10″ Favorite Mannheim – 623

Front

Gutter

Back

in Scale

cm Scale

End Stamp 623

Clark McCoy’s K&E Catalogs – 4054 Information page

Catalog Number: MHF-91, Location: MHF-D3

Mike Frey Slide Rules

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