A professional who supervises and coordinates activities of workers engaged in making models, such as mechanical and electric clocks, timers, and controls. Responsibilities include:

• Sets up and operates lathe, milling machine, shaper, grinder, and related machines and equipment.
• Trains new workers.
• Inspects models or fabricated parts for conformance to specifications, using gauges, micrometers, and other precision instruments.
• Assembles and tests models to verify performance standards.
• Requisitions materials and parts.
• Performs other duties as described under supervisor master title.