R 408.10103 Definitions; D to L.

Rule 103. (1) "Disc or plate-mounted grinding" means the removal of material using an abrasive wheel fastened to a metal plate. (2) "Flange" means a collar, disc, or plate between which abrasive wheels are mounted. (3) "Form grinding" means to impart a specific shape or form onto a grinding wheel for the purpose of grinding that specific shape to the material or workpiece. (4) "Guard" means an enclosure that is designed to restrain pieces of abrasive wheel and protect the employee if the wheel breaks. (5) "Internal grinding" means the precision grinding of the inside surface of the hole in a workpiece. (6) "Lapidary" means to cut off, shape, or grind precious or semiprecious gem-like materials.