Job Description:

• 1) Tends lapping machine that polishes flat surfaces of round jewel bearings: Blocks in molten shellac in circular row near outside edge of flat, circular steel block.

• 2) Sets blocks, usually four or five at once, in holding chuck and turns screw press to force blocked jewels against diamond dusted revolving lap.

• 3) Observes polishing to detect signs of overheating and removes hot block for cooling before shellac melts and jewels are damaged by being turned on edge.

• 4) Examines finish of jewels for appearance with loupe and verifies thickness with upright dial gauge.