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DOT Code: 770.685-034

Industry: clock & watch

Tends grinding machine that grinds sapphire squares to disk shape, for use as jewel bearings: Glues specified number of sapphire squares together to form stack. Positions stack between abrasive and rubber rolls of grinding machine and starts machine that grinds sapphires to disk shape. May operate similar machine equipped with diamond-dust-coated wheel to smooth edges of sapphire disk.

GOE: 06.04.08 STRENGTH: L GED: R3 M1 L2 SVP: 4 DLU: 77