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Details and Image



Item#TypeModel No.Match No.Variant No.Model NameMakerCountryProduction or Serial No.MaterialScale LengthDateCondition
KEU602Linear
N4088-5
4309
n/a
Polyphase DuplexKeuffel & EsserUSA
537103
Engine divided celluloid laminated mahogany
"20"
1937
C5

Notes: "Improved glass indicator. Patent notation changed from dates to patent number (i.e PAT. 1,930,832). Model number on slide rule now matches model number listed in K&E catalog."

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