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Details and Image



Item#TypeModel No.Match No.Variant No.Model NameMakerCountryProduction or Serial No.MaterialScale LengthDateCondition
KEU350Linear
N4096
4365
n/a
Desk Slide RuleKeuffel & EsserUSA
547715
Engine divided celluloid laminated mahogany
"20"
1937
C3

Notes: "Improved glass indicator. Model number: . Patent notation in middle above DF scale: PAT. 1,934,232."

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