Job Description:

• 1) Locates vibrating point on clock and watch hairsprings and cuts hairspring at specified point to synchronize oscillation of movements, utilizing one or both of following methods: Fastens free end of spring of hairspring assembly in fixture of electronic vibrating device, and adjusts bed of device until it touches pivot of vertically oscillating balance wheel, as indicated on cathode-ray tube.

• 2) Observes second cathode-ray tube to determine excess length of spring as vertical swings are translated into corresponding horizontal oscillations.

• 3) Winds excess length of spring into holding fixture of device and readjusts bed until cathode-ray tube readings are within acceptable limits.