What Was The Earliest Torque Wrench Called?
What Was The Earliest Torque Wrench Called? The first patent for a torque wrench was filed by John H. Sharp of Chicago in 1931. This wrench was referred to as a torque measuring wrench and would be classified today as an indicating torque wrench. In 1935, Conrad Bahr and George Pfefferle patented an adjustable ratcheting