A professional who operates one or more previously set up automatic screw machines to perform series of machining operations, such as boring, threading, and facing metal bar, rod, or wire stock to specifications to produce parts for clocks, watches, and other timing devices. Respnsibilities include:

• Reads specifications to determine dimensions, tolerances, and number of parts required.
• Loads specified stock into feeding mechanism.
• Pushes starting button, and moves clutch lever to start machine and engage gears.
• Observes machine operation and verifies conformance of workpiece to specifications, using measuring instruments, such as micrometers, calipers, scales, and go-not-go gauges.
• Makes adjustments to tool and toolholders, stock and guide tensions, and operating speed and lubricant flow to maintain machine setup, using handtools.
• May operate bench grinder to reshape or sharpen edges of cutting tools.