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Precision Test Weights with Calibration Certificate
Class 1
Class 4
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.
Precision Test Weights
30 g to 500 g
Our most accurate test weights, these are often used to calibrate precision scales. They are marked with their weight.
| Wt. | Tolerance | Dia. | Ht. | Material | Class | Specifications Met | Includes | Each | |
| 30 g | -0.000074 g to 0.000074 g | 3/4" | 5/8" | Stainless Steel | 1 | ASTM E617 Class 1 | Glove; Plastic Case | 00000000 | 0000000 |