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Item#TypeModel No.Model NameMakerCountryMaterialDiameterDateCondition
Type 3 Fat
CalculigrapheHenri ChatelainFranceNickel-plated brass"2"c. 1895-1906

Notes: "Fat"" version - 3/4"" (20mm) thick. Has circular chain loop and tall knob. Same scales as Boucher's Calculator. Knob rotates front scale and turns cursors front and back when side button is pressed. H.C. Paris and Made in France."

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