Job Description:

• 1) Inspects watch balance wheels to verify that rim lies in single plane and that plane is perpendicular to staff axis, using truing II caliper, tweezers, and loupe.

• 2) Mounts balance wheel and staff between jaws of truing calipers, using tweezers, and adjusts index pointer above end of balance arm.

• 3) Turns and examines wheel to verify that space between index and both arms is identical, using loupe.

• 4) Adjusts index pointer over rim of wheel and verifies that width of light slit between rim and index does not vary as wheel is rotated.

• 5) Rejects wheels that are not true.