A professional who tends electric timer that verifies timing beat of clock, watch, and timer movements and adjusts movements to correct timing defects, using watchmaker's tools and loupe. Responsibilities include:

• Sets up timing device for specified type movement.
• Positions movement in holding fixture and connects movement to timing device.
• Activates timing device that automatically compares timing beat of test movement with standard and records discrepancies on tape.
• Adjusts movements to attain accurate beat or routes movement to timing adjuster.
• Records timing beat defects.
• Places acceptable movements in tray for assembly.