Archive of Collections



Details and Image



Item#TypeModel No.Match No.Variant No.Model NameMakerCountryProduction or Serial No.MaterialScale LengthDateCondition
KEU353Linear
4035
4056
2
Mannheim AdjustableKeuffel & EsserUSA
249
Engine divided celluloid laminated mahogany
"8"
1921
C6

Notes: "Patent notation moved from slide well to front of slide rule below D scale. Also, celluloid lamination removed from slide well."

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