A professional who assembles instruments and devices, such as barometers, control valves, gyroscopes, hygrometers, speedometers, tachometers, and thermostats, using handtools, power tools, and measuring instruments. Responsibilities include:

• Visually examines parts for defects.
• Fits, aligns, and secures internal and external component parts to assemble finished unit, using handtools, power tools, soldering iron, and measuring instruments.
• May inspect assembled unit for conformance to specifications, using measuring and testing equipment.
• May test functional performance of unit, using test equipment.
• May be designated according to product assembled as regulator assembler; thermostat assembler; valve assembler.