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Item#TypeModel No.Model NameMakerCountryMaterialDiameterDateCondition
Molter Circular Slide RuleWilhem MolterGermanyNickel-plated Brass"2-1/2"c. 1939

Notes: "Late"" model with coarse milling on outer rim, slotted screw in center knob, 14mm knob diameter on front, 16mm knob diameter on back, and clear grips on cursors. Case is an open top leather pouch. Operates like Halden Calculex."

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