Job Description:

• 1) Polishes screwheads to produce watch screws of specified dimensions and finish, using blocking equipment and polishing wheels: Fits screws in block, using tweezers and suction device.

• 2) Applies shellac over screws, heats block to melt shellac, and seats screws in block, using handpress.

• 3) Grinds block screwheads to remove burrs, using grinding wheel.

• 4) Polishes screwheads to specified dimensions and finish, using flat-lap polisher, or manually oscillates screwheads on polishing stones, using overhead pole or hand stick to apply pressure.

• 5) Examines and measures screws to verify required finish and dimensional specifications, using loupe and precision gauge.

• 6) Washes and boils block to remove loose polish and to liquefy shellac.

• 7) Taps block to remove screws.

• 8) Rinses, dries, and places screws in beakers for inspection.