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Details and Image



Item#TypeModel No.Match No.Variant No.Model NameMakerCountryProduction or Serial No.MaterialScale LengthDateCondition
KEU231Linear
4080-5
4217
n/a
Log Log Duplex TrigKeuffel & EsserUSA
497681
Engine divided celluloid laminated mahogany
"20"
1949
C7

Notes: "Improved glass indicator missing. All notations on front above L scale. Patent notation has RE 20,984, 3 patent numbers and PAT. PEND."

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