Repair, install, adjust, or maintain industrial production and processing machinery or refinery and pipeline distribution systems. May also install, dismantle, or move machinery and heavy equipment according to plans.

Lubricate machinery, change parts, or perform other routine machinery maintenance.

Install, dismantle, or move machinery and heavy equipment according to layout plans, blueprints, or other drawings.

Build or repair equipment such as furnaces, kilns, cupolas, boilers, converters, ladles, soaking pits, and ovens, using refractory materials.

Install or repair cables or wires used in electrical power or distribution systems. May erect poles and light or heavy duty transmission towers.

Install and repair telecommunications cable, including fiber optics.

Repair and adjust cameras and photographic equipment, including commercial video and motion picture camera equipment.

Test, adjust, or repair biomedical or electromedical equipment.

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

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