Legal-for-Trade Test Weights with Calibration Certificate
To ensure accurate calibration of legal-for-trade scales, these test weights come with a certificate of calibration traceable to NIST that states they’ve passed a test for accuracy. They are marked with their weight.
For technical drawings and 3-D models, click on a part number.
| Wt. | Tolerance | Dia. | Ht. | Material | Class | Specifications Met | Each | |
| 300 g | -0.06 g to 0.06 g | 1 3/8" | 1 11/16" | Stainless Steel | 5 | ASTM Class 5 Tolerances | 0000000 | 0000000 |
Precision Test Weights with Calibration Certificate
Often used to calibrate precision scales, these highly accurate test weights come with a certificate of calibration traceable to NIST that states they’ve passed a test for accuracy. They are marked with their weight.
Class 1 weights are highly accurate and used as a reference standard for calibrating other calibration weights. They are also good for calibration of microbalances and analytical balances.
Class 4 weights are good for calibrating precision balances, laboratory balances, and digital scales.
Legal-for-Trade Test Weights
Calibrate legal-for-trade scales. These test weights are marked with their weight.
For technical drawings and 3-D models, click on a part number.
| Wt. | Tolerance | Dia. | Ht. | Material | Class | Specifications Met | Each | |
| 300 g | -0.06 g to 0.06 g | 1 3/8" | 1 11/16" | Stainless Steel | 5 | ASTM Class 5 Tolerances | 0000000 | 000000 |
Precision Test Weights
Our most accurate test weights, these are often used to calibrate precision scales. They are marked with their weight.
For technical drawings and 3-D models, click on a part number.
| Wt. | Tolerance | Dia. | Ht. | Material | Class | Specifications Met | Includes | Each | |
| 300 g | -0.00075 g to 0.00075 g | 1 1/2" | 1 1/2" | Stainless Steel | 1 | ASTM E617 Class 1 | Glove; Plastic Case | 00000000 | 0000000 |