These test weights come with a certificate of calibration traceable to NIST that states they’ve passed a test for accuracy.

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.

These highly accurate test weight sets for calibrating precision scales come with a certificate of calibration traceable to NIST that states they’ve passed a test for accuracy.

To confirm accurate calibration of legal-for-trade scales, these test weights come with a certificate of calibration traceable to ASTM that states they’ve passed a test for accuracy.

The included certificate of calibration traceable to NIST states that these test weights have passed a test for accuracy.