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Details and Image



Item#TypeModel No.Match No.Variant No.Model NameMakerCountryProduction or Serial No.MaterialScale LengthDateCondition
KEU410Linear
4091-3
4540
1
Log Log DecitrigKeuffel & EsserUSA
45434
Engine divided celluloid laminated mahogany
"10"
1933
C5

Notes: Frameless glass indicator with plastic guides and protective flaps. All notations on reverse of slide rule above LL0 scale. Patent notation: PAT.APRIL 1.'24 OTHER PAT. PENDING.

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