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DOT Code: 770.381-030

Industry: clock & watch

Grinds, drills, and finishes sapphire jewel bearings for use in precision instruments, such as compasses, meters, and chronometers: Grinds and faces sapphire blanks to flatten surfaces, and turns edges, to form bearings of specified size and thickness. Drills and finishes holes in centers of bearings.

GOE: 06.01.04 STRENGTH: L GED: R4 M3 L3 SVP: 7 DLU: 77