2. Calibration gram scale weight made of carbon steel with chrome finish.
3. OIML Class: M1,Permissible Error: +/-0.003g
4. Function of calibration gram: metric calibration weight for calibrating the weights, electronic balances and scales
5. Used for commercial area,such as digital pocket scale, jewelry carat scale, diamond scale, precision balance test,also suitable for general laboratory or educational test.