Troemner Class 2 Electronic Balance Weight with Traceable Certificate, 1000 g, 1.97 x 2.57"
Electronic Balance Weight, 1000 g, 1.97 x 2.57", 316 Stainless Steel, Class 2, Cylindrical with Groove, 0.5 mg Tolerance, 7.95 g/cm3 at 20°C Density, Two-piece Construction, with Traceable Certificate, Used as Reference Standard