Ingersoll Milling Machine Company EDM (electrical discharge machining) power supply. This was a multilead version for aerospace applications. It was manufactured for General Electric Company and Pratt Whitney.
Ingersoll Milling Machine Company 120" 4 Head Face Plate Drive Machine. Manufactured for General Electric Company, Schenectady, New York. Photo is part of a Machine Photo Record assembled by J.R. Johnson to show machines built by Ingersoll between…