12 in standing model with bronze wheel; standard plug for grounded type receptacles, 60 cycle 155/233 rpm, 50 cycle 190/290 rpm spindle speed; dual-speed motor has a low and high speed winding, but no starting winding, must switch to low then high; plumbing bowl on 12 in. Model are tapped for 1-1/4 in. Npt drain; lubricant should be drained every 750 hour of normal use, every 500 hour for heavy use; 12 in low speed polisher/grinder may be adapted for automet by using no 60-2052 indexing splash ring; automet will simultaneously process six 1.000 in., five 1.250 in. Or three 1.500 in. Specimen in the rough and final polishing stages
