MISCELLANEOUS REPAIR AND RELATED SERVICES (SIC 769) Establishments primarily engaged in repair work by welding, including automotive welding. Welding in connection with the manufacture of a product is classified in Manufacturing. Welding contractors doing welding work at construction sites are classified in Construction, Industry 1799. Establishments primarily engaged in rewinding armatures and rebuilding or repairing electric motors. Establishments classified here may either repair customers' equipment or repair their own equipment for sale or exchange to users or to the trade. Establishments primarily engaged in the repair of electrical appliances are classified in Industry 7629. Establishments primarily engaged in specialized repair services, not elsewhere classified, such as farm machinery and equipment repair; lawnmower, saw, knife, and tool sharpening and repair; bicycle repair; lock and gun repair; musical instrument repair; and the repair of typewriters. Repair services which involve primarily electrical or electronic equipment or components are classified in Industry 7629; however, primarily mechanical repair of electrically powered equipment, such as electric sewing machine repair, is included here.