Move or install mobile homes or prefabricated buildings.

Repair, clean, and adjust mechanisms of timing instruments, such as watches and clocks. Includes watchmakers, watch technicians, and mechanical timepiece repairers.

Repair percussion, stringed, reed, or wind instruments. They specialize in one area, such as piano tuning.

Repair, adjust, or install all types of electric or gas household appliances, such as refrigerators, washers, dryers, and ovens.

Install, repair, and maintain mechanical regulating and controlling devices, such as electric meters, gas regulators, thermostats, safety and flow valves, and other mechanical governors.

Install, service, or repair automatic door mechanisms and hydraulic doors. Includes garage door mechanics.

Diagnose, adjust, repair, or overhaul buses and trucks, or maintain and repair any type of diesel engines. Includes mechanics working primarily with automobile or marine diesel engines.

Repair, adjust, or install audio or television receivers, stereo systems, camcorders, video systems, or other electronic home entertainment equipment.

Repair, test, adjust, or install electronic equipment, such as industrial controls, transmitters, and antennas.

Install, set up, rearrange, or remove switching, distribution, routing, and dialing equipment used in central offices or headends. They service or repair telephone, cable television, internet, and other communications equipment on customers' property. They install communications equipment or communications wiring in buildings.