Vtg Lot 2 Mechanical Calculators Fosdick Drilling Calculator & Spring Data Compu For Sale

Description:

This listing is for a lot of two vintage mechanical engineering slide calculators:

1. Fosdick Drilling Calculator

   • Made by The Fosdick Machine Tool Co., Cincinnati, Ohio

   • Used to calculate drill diameter, RPM, feed rate, and drilling time

   • Features colorful graphics and includes settings for various drill types like upright drills, jig borers, radial drills, and sensitive drills

2. Spring Data Computer

   • Made by The William D. Gibson Co., Chicago, Illinois

   • Designed for engineers working with springs

   • Calculates fiber stress, mean diameter, wire size, number of coils, and deflection

   • Dual-sided with detailed mechanical reference pieces are in excellent visual condition for their age with smooth sliding action and vibrant colors. These are great examples of pre-digital analog calculators used in manufacturing and engineering industries. Perfect for display, teaching tools, or collectors of industrial tools and ephemera.

     
     

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