Make tools, fittings, and small metal pieces used in other products.
Inspects measuring, indicating, and controlling instruments, such as speedometers, sequence timers, and thermostats, and component parts, for conformance to specifications: Examines components and housings for specified characteristics, such as smoothness and centering of holes, or defects, such as scratches and chips. Measures instrument parts to verify conformance to blueprint specifications, using measuring devices, such as ruler, thread gauge, micrometer, and dial indicator. May use microscope to inspect bearings or other component parts. May test functional performance of instrument, using test equipment. May write inspection reports concerning defective parts and assemblies.