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Add a distinctive piece of American engineering and mathematics history to your collection with this vintage Pickett & Eckel slide rule, manufactured in Chicago, Illinois, USA, circa 1945–1946. The rule is marked “International Copyright 1945,” “U.S.A. Copyright 1945,” “R. C. Pickett, Chicago U.S.A.,” “Patents Pending,” and “Made in U.S.A. by Pickett & Eckel, Chicago 44 Illinois,” placing it among the company’s early postwar-era calculating instruments. It features finely graduated mathematical scales, a sliding center section, metal-framed cursor, and serial number 002257, and is accompanied by its original fitted black case embossed “Pickett & Eckel, Inc.” Once an essential calculating tool for engineers, scientists, students, and technical professionals before electronic calculators became commonplace, this early Pickett & Eckel example makes an appealing collectible for engineering, mathematics, scientific instrument, or vintage office collections. Good vintage condition with minor wear consistent with age and use.
Dimensions: Slide Rule: 13 1/8” x 3 1/8” x 3/4” Case: approximately 14” x 4” x 1”
