1943 Fosdick Drilling Calculator Slide Rule Cincinnati Ohio Machine Tool 9x3 For Sale

Discover a fascinating piece of industrial history with this vintage Fosdick Drilling Calculator, proudly manufactured by The Fosdick Machine Tool Co. of Cincinnati, Ohio. This intricate slide rule, copyright 1943 by Perry Graf Corp., Maywood, Ill., is a testament to the precision engineering tools of the mid-20th century. It features multiple scales and tables designed to calculate optimal drilling parameters, including drill diameter, horsepower, RPM, surface speed, feed per revolution, and material thickness for various metals like cast iron, steel, bronze, and tool steel.This unique ephemera showcases the ingenuity of its era, serving as a practical guide for machinists and engineers. The calculator is adorned with text detailing Fosdick\'s manufacturing expertise in upright drills, jig borers, radial drills, and sensitive drills, alongside illustrative diagrams. It makes a compelling addition to any collection of vintage industrial artifacts, mechanical calculators, or early computing devices. Its robust construction and detailed information offer a tangible link to the past, reflecting the foundational principles of manufacturing during a pivotal period.