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Item#TypeModel No.Match No.Variant No.Model NameMakerCountryProduction or Serial No.MaterialScale LengthDateCondition
KEU156Linear
4070
4182
1
DuplexKeuffel & EsserUSA
none
Engine divided celluloid laminated mahogany
"10"
1903
C5

Notes: Brass metal indicator (chisel tooth). PAT. OCT.6.1891 below D scale on front face and KEUFFEL ESSER Co NEW-YORK below D scale on back face. No pi (?) gauge mark. Scales unlabelled. C-shaped brackets.

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