Profile: Proto Tool & Gage, Inc. specializes in prototypes, assembly fixtures, precision gages, production tools and welding. Our services include manufacturing, design, assembly and documentation. We are in machining & processing of materials including tool sheets, refractory metals and plastics. We are also specialized in machining for computer, automotive, aerospace, medical and research related industries. We offer drilling, cutting, boring, honing, grinding, lathe & mill work.