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Item#TypeModel No.Model NameMakerCountryMaterialDiameterDateCondition
Fowler's Magnum Long Scale CalculatorFowler & Co.UKPressed metal"4-5/8"c. 1943-1944

Notes: "Single sided calculator with a scale length equivalent to a 50"" linear slide rule. Originally introduced in 1927, this is a later version. Has chain loop, celluloid disc cursor, and pressed metal back. No serial number."

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