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Details and Image



Item#TypeModel No.Match No.Variant No.Model NameMakerCountryProduction or Serial No.MaterialScale LengthDateCondition
KEU531Linear
n/a
4584
1
AmericanKeuffel & EsserUSA
33
Engine divided celluloid laminated boxwood
"10"
1900
C5

Notes: Adjustable version of American slide rule with three adjustment screws on the upper rail. Inch scale numbers on sloped edge of rail above the indicator groove.

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