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Item#TypeModel No.Model NameMakerCountryMaterialDiameterDateCondition
FOW040Pocket
3MG2
Fowler's Twelve-Ten CalculatorFowler & Co.UKPressed metal"3-3/8"c .1950-1953
C4

Notes: Single sided calculator with scales divided in tenths and twelfths (duo-decimal). Cursor is a celluloid segment rather than celluloid disc. No serial number.

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