Inspect completed hairspring assemblies.
What does a Hairspring Inspector I do?
Inspects completed hairspring assemblies, using loupe and watchmaker’s tools: Verifies that spring and balance wheel are true in flat and round [INSPECTOR, BALANCE TRUING], and that mass of balance wheel is equally distributed around axis of rotation [INSPECTOR, POISING]. Examines positioning of parts to determine that parts are in beat, and that overcoil is in specified relationship to spring, using loupe. Verifies that parts are securely staked, using tweezers. Separates unsatisfactory assemblies. Observes minute parts and functioning of parts with loupe. May test parts to determine if vibrating point has been accurately located, using master balance [HAIRSPRING VIBRATOR].