Master Tool & Machine Inc, 13 Grace Ave, Plainville, CT 06062, US

Founded in 1948, A & M Tool & Die Co. Inc. is one of the largest machine and machine part manufacturers in the northeastern United States. Based in Southbridge, Mass., the company's range of materials include steel, as well as gray iron castings, stainless steel, aluminum, brass, bronze and copper/brass alloys. In addition, it offers backup capabilities, such as heat treating, welding, Blanchard grinding and broaching. The company's projects range from the manufacture of complete machines weighing tons to the development of small precision tools for the optical and electronics industries.