2" Sturtevant Micronizer Jet Mill, Model SDM2. Used Sturtevant Micronizer, mode SDM2, stainless steel construction, 2" diameter mill with AccuRate feeder volumetric feeder, cyclone fines collector, nominally rated .5-2 lbs/hr, Sanity U.S.D.A. design, on stainless steel base, serial# 1220, built 1999.