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Hairspring adjuster

A professional who inspects and adjusts watch hairsprings after assembly to pillar plate for conformance to mechanical specifications, using loupe, holding device, and tweezers. Responsibilities include:

  • Mounts assembly in holding device.
  • Examines outer coil to verify that coil is centred between regulator pins, and that positioning of overcoil is within acceptable limits, using loupe.
  • Pinches segment of coil to position and level coil, using tweezers.
  • Spins balance wheel to verify that all coils of spring are within same plane and concentric with collet when oscillating.
  • Adjusts coils to correct discrepancies, using tweezers.
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