Counterpoise and hanger cast iron calibration weights are available in ASTM Class 6 and 7 and OIML Class M1 and M2.
- Counterpoise weights for ratio weighing
- Nominal value marked on weight
- Weight capacities of 10 kg/20 lb and up meet NIST Handbook 105-1 and Handbook 44 specifications
- Metric weights designated by gold paint
- Avoirdupois weights (pound) designated by silver paint
- Serial numbers may be stamped on weights (optional)