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Item#TypeModel No.ScalesModel NameMakerCountrySerial No.Case MaterialLenght Open (Closed)DateCondition
OTK056Cylindrical
M
418 / 419Otis King's Patent Calculator"Carbic, Ltd. "UK6092Nickel Plated Brass"10-3/4" (6-1/2")"1923
C6

Notes: "Unusual logarithmic scale numbering. Top cap has triangle shaped chain loop. Carbic Ltd. address at 51 Holborn Viaduct, London."

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