Inspect, test, sort, sample, or weigh nonagricultural raw materials or processed, machined, fabricated, or assembled parts or products for defects, wear, and deviations from specifications. They use precision measuring instruments and complex test equipment.

Set up, operate, or watch over machines that cut or slice materials, such as glass, stone, cork, rubber, tobacco, food, paper, or insulating material.

Grind, sand, or polish, using hand tools or hand held power tools, a variety of metal, wood, stone, clay, plastic, or glass objects. Includes chippers, buffers, and finishers.

Set up, operate, or watch over woodworking machines, such as drill presses, lathes, shapers, routers, sanders, planers, and wood nailing machines. They operate cnc equipment.

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.