Join our team today! Granite State Manufacturing (GSM) is a small business contract manufacturer providing complete in-house capabilities including machining, NAVSEA-certified welding, wiring, assembly, and testing. GSM-built equipment is on every US Navy submarine and many surface ships. GSM has 5-axis machining up to 33ft long or 82in diameter and welding up to 35,000lbs. #GSMManchester #GSMNashua #machinists