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Details and Image



Item#TypeModel No.Match No.Variant No.Model NameMakerCountryProduction or Serial No.MaterialScale LengthDateCondition
KEU246Linear
N4092-3
4329
1
Log Log DuplexKeuffel & EsserUSA
183273
Engine divided celluloid laminated mahogany
"10"
1926
C5

Notes: "Frameless glass indicator with plastic guides. Major scale change: K scale added above DF scale on front side. N added to model number in catalog, but no N in model number on slide rule. APRIL 1.'24 replaces OTHER PAT. PENDING in patent notation."

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