||Musical Instrument Repairers and Tuners
- Play instruments to evaluate their sound quality and to locate any defects.
- Compare instrument pitches with tuning tool pitches to tune instruments.
- Strike wood, fiberglass, or metal bars of instruments, and use tuned blocks, stroboscopes, or electronic tuners to evaluate tones made by instruments.
||Bus and Truck Mechanics and Diesel Engine Specialists
- Attach test instruments to equipment, and read dials and gauges to diagnose malfunctions.
- Inspect, test, and listen to defective equipment to diagnose malfunctions, using test instruments such as handheld computers, motor analyzers, chassis charts, or pressure gauges.
||Manufactured Building and Mobile Home Installers
- Inspect, examine, and test the operation of parts or systems to evaluate operating condition and to determine if repairs are needed.
- Open and close doors, windows, and drawers to test their operation, trimming edges to fit, using jackplanes or drawknives.
- Inspect and test docks, ships, buoyage systems, plant intakes or outflows, or underwater pipelines, cables, or sewers, using closed circuit television, still photography, and testing equipment.
- Carry out non-destructive testing, such as tests for cracks on the legs of oil rigs at sea.
||Electric Motor, Power Tool, and Related Repairers
- Test equipment for overheating, using speed gauges and thermometers.
||Signal and Track Switch Repairers
- Test air lines and air cylinders on pneumatically operated gates.
- Reassemble and test subassembly units.
||Farm Equipment Mechanics and Service Technicians
- Reassemble machines and equipment following repair, testing operation and making adjustments as necessary.
- Test timepiece accuracy and performance, using meters and other electronic instruments.
||Electrical and Electronics Repairers, Commercial and Industrial Equipment
- Set up and test industrial equipment to ensure that it functions properly.
||Medical Equipment Repairers
- Test, evaluate, and classify excess or in-use medical equipment and determine serviceability, condition, and disposition, in accordance with regulations.
||Home Appliance Repairers
- Observe and test operation of appliances following installation, and make any initial installation adjustments that are necessary.
||Outdoor Power Equipment and Other Small Engine Mechanics
- Test and inspect engines to determine malfunctions, to locate missing and broken parts, and to verify repairs, using diagnostic instruments.
||Industrial Machinery Mechanics
- Observe and test the operation of machinery or equipment to diagnose malfunctions, using voltmeters or other testing devices.
||Camera and Photographic Equipment Repairers
- Test equipment performance, focus of lens system, diaphragm alignment, lens mounts, or film transport, using precision gauges.
||Helpers--Installation, Maintenance, and Repair Workers
- Examine and test machinery, equipment, components, and parts for defects to ensure proper functioning.
||Maintenance Workers, Machinery
- Inspect or test damaged machine parts, and mark defective areas or advise supervisors of repair needs.
||Recreational Vehicle Service Technicians
- Open and close doors, windows, or drawers to test their operation, trimming edges to fit, as necessary.
||Coin, Vending, and Amusement Machine Servicers and Repairers
- Test machines to determine proper functioning.
||Mobile Heavy Equipment Mechanics, Except Engines
- Overhaul and test machines or equipment to ensure operating efficiency.