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Details and Image



Item#TypeModel No.Match No.Variant No.Model NameMakerCountryProduction or Serial No.MaterialScale LengthDateCondition
KEU408Linear
N4053-3
4113
4
Polyphase Mannheim AdjustableKeuffel & EsserUSA
344166
Engine divided celluloid laminated mahogany
"10"
1948
C4

Notes: Improved glass indicator. Company/city notation moved to far left of slide rule with patent notation and MADE IN U.S.A. moved to far right.

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