Mass calibration refers to the calibration of test weights, which are used to calibrate measurement equipment such as lab balances & scales.

During mass calibration, the unit under test is compared to a calibrated test weight. The calibration is meant to ensure that the mass produced by your test weight matches the reading produced by the calibrated NIST traceable test weight. If your test weight’s reading does not match the calibrated NIST traceable test weight, your weight should be adjusted. Once the two readings match, the calibration is complete.