Ross Double Planetary mixer, Mdl.HDM-75, S/N 23697 Mdl.HDM-75. Mfg 1970. 304 Stainless Steel construction product contact areas. Two Stainless Steel change cans 22-1/2" deep x 34-1/2" dia. on casters. Stainless Steel hood (not vacuum rated). 7" x 14" charge port w/ cover. Two mixing tools, one side scraper. Explosion proof, variable speed drive motor: 10 HP-3PH-60 HZ-230/460 Volt-1750/580 RPM, to a gear reducer, ratio 59.94:1. Stirrers on own axis 11-34 RPM, orbital 15-30 RPM. Air/oil lift. (A/R)