Available in nine variations including 50g x 10mg, 500g x 1g, 2000g x 1g, and several other scale calibration sizes in between, these weight sets are made from stainless steel, are lead-free and clean. Typical applications include commercial, educational, food, medical, laboratory, and pharmaceutical daily QC calibration. The ASTM Class 6 weight set simplifies daily quality control checks for balances and scales and calibration before procedures and feature 12 stainless steel weights that come cradled in foam, inside a wooden box, and include tweezers for proper handling without touching. Each of these balance calibration weights meets Class 6 adjustment tolerances.