Polishing machines are used for preparing metallo graphic specimens & petrographic from peregrinating to smooth surface finish for micro structure examination. The machine is basically of motor driven disc type to provide step less variable speed from 400 to 1100 RPM approx. The driven is provided by suitable H.P. single phase 220V A.C. Motor. The brass ped steel disc of 8" or 10" dia (easily replaceable).