Archive of Collections



Details and Image



Item#TypeModel No.Match No.Variant No.Model NameMakerCountryProduction or Serial No.MaterialScale LengthDateCondition
KEU471Linear
4031
4049
3
Mannheim AdjustableKeuffel & EsserUSA
163X
Engine divided celluloid laminated mahogany
"5"
1909
C5

Notes: "Centimeter extension scale removed from slide well. Also subtle changes to conversion table: font increased in size a bit and the equivalency ratio for diameter of circle to its circumference (first line, first column) changed from 113:355 to 226:710."

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