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Item#TypeModel No.Model NameMakerCountryMaterialDiameterDateCondition
FOW035Pocket
3MG2
Fowler's Twelve-Ten CalculatorFowler & Co.UKPressed metal"3-3/8"c. 1938-1942
C4

Notes: Single sided calculator with scales divided in tenths and twelfths (duo-decimal). Metal back and felt lined leather case. Serial number 2590.

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