Strube Inc is a privately held small business incorporated in the Commonwealth of Pennsylvania in 1958 by William P. Strube. By the early 1970s the company had become one of the dominant U.S. suppliers of military surplus aircraft instruments and instrument components. Customers range from FAA Repair Shops and Commercial Brokers to Commercial Airlines and Department of Defense ( DOD ) and Service Logistics Organizations. In 1973, the company established MRO Business Unit, FAA Repair Station OX1R390X. This allowed the company to draw upon its huge inventory and provide its customer community with Overhaul-Repair-Certification of Class 1, 2, 3, and 4 instruments. Also during the early 1970s the company implemented a MIL-I-45208 Quality System and moved into manufacture and overhaul of aircraft instruments for the U.S. Army, Navy, Air Force, and other DOD agencies.