A professional who tends one or more machine tools, special-purpose machines, or industrial robots to machine metal workpieces to specifications on production basis. Respnsibilities include:

• Lifts workpiece manually or using hoist and secures workpiece in fixture or loads automatic feeding device.
• Starts machine, engages feed, and observes operation.
• Inspects and measures machined workpieces to verify conformance to specifications, using instruments, such as preset comparator, fixed gauges, calipers, micrometer, or microscope.
• May move machine controls and guides to adjust machine.
• May replace worn machine accessories, such as cutting tools or brushes.
• May add coolant to machine reservoir and turn valve to start flow of coolant.
• May file, sand, or shape machined parts, using handtools and power tools.
• May clean machined parts, using degreasing tank or solvent and rags.
• May machine plastics or other nonmetals.
• May tend machines and equipment other than machine tools.