Operates lathe to grind jewel bearings to specified thickness: Mounts fixture in chuck of lathe and inserts jewel bearing into recess of fixture, using tweezers.
Mounts grinding disk impregnated with diamond dust on opposite faceplate of lathe. Manipulates controls to bring bearing into contact with grinding disk and to govern grinding process, working to tolerances of 0.0005 inch. Examines bearings, using measuring instruments, such as gauges and micrometers, to ensure conformance with specifications.
