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Item#TypeModel No.Model NameMakerCountryMaterialDiameterDateCondition
Fowler's Long Scale CalculatorFowler & Co.UKPressed metal"2-1/2"c. 1924-1931

Notes: "An early version of the long scale calculator which replaces the Type RX. Short and long scale on front, short scale on rear. One side stem turns front dial and the other turns the rear dial and front cursor. Serial number 11353."

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