The Ventura Tool Company was formed in 1930 by Carl and Fritz Huntzinger. Fritz Huntsinger purchased the existing Schwab-Lane Tool Company on Ventura Avenue in Ventura, California and changes its name to the Ventura Tool Company. The company repaired pumps and other machinery in the oilfield; it grew slowly through the Depression, but by 1937 had 50 employees and had become well established on the Avenue. Ventura Tool improved upon the existing Boroscope, an instrument used for inspecting cannon barrels. Huntsinger had a light added to the tip, and the instrument, which used a wide angle lens to relay images back to its operator, could be used for locating defects in petroleum pipes. This innovation revolutionized the inspection of petroleum pipes for defects. Ventura Tool gradually added new techniques for use in these inspections, and the company grew further. It acquired the Master Thread Company, Pressure Weld, Inc. and Tube Upset Corporation. The company specialized in pipe repair and began to develop a high speed drill in the 1940s.41 It also began manufacturing tools for the Air Force. The company would eventually change its emphasis and reincorporate as Vetco Offshore Industries, Inc. in the late 1950s.