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Item#TypeModel No.Model NameMakerCountryMaterialDiameterDateCondition
Fowler's Universal CalculatorFowler's Calculators Ltd.UKCast metal (late)"3-3/8"c. 1960-1964

Notes: "Single sided calculator with same scale length as a linear mannheim slide rule (10"") but in more compact form. Cursor is a celluloid segment rather than celluloid disc. Case is cast metal variety with rexine covered metal back. No serial number."

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