Archive of Collections



Details and Image



Item#TypeModel No.Match No.Variant No.Model NameMakerCountryProduction or Serial No.MaterialScale LengthDateCondition
KEU511Linear
4045
4080
n/a
Mannheim AdjustableKeuffel & EsserUSA
8
Engine divided celluloid laminated mahogany
"16"
1909
C5

Notes: Metal framed glass indicator. Conversion table has no vertical line in 4th column. C scale has two guage marks: C at 1.127 and C1 at 3.57. These gauge marks are not seen on any other 4045 slide rule and their purpose is unknown.

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