Job Description:

• 1) Measures inside and outside diameters of watch jewels and segregates jewels according to size: Gauges inside diameter of jewel hole by slipping jewel on graduated, tapered needle.

• 2) Places jewel in precision jaw gauge and measures its outside diameter.

• 3) Segregates jewels according to size and rejects those jewels failing to meet tolerances as fine as 0.

• 4) 0001 inch.

• 5) May measure hole size of jewel bearings, using go-not-go gauge.

• 6) May be designated according to measurements made as Jewel-Diameter Gauger; Jewel-Hole Gauger.