A spring controls the tension.

Support the weight of your tool with air hose instead of a separate cable.

For legal-for-trade scales.

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 top hook lets you attach these weights to hanging scales, and the bottom hook lets you connect multiple weights in a series.

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

Use with legal-for-trade scales.

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.

Calibrate your scale with these test weights.

A certificate of calibration traceable to NIST states that these test weight sets have passed a test for accuracy.

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

Ensure reliable calibration of legal-for-trade scales—these test weight sets come with a certificate of calibration traceable to ASTM that states they’ve passed a test for accuracy.

Stack multiple grooved weights together to calibrate your scales.

Mount these balancers in the corner of a horizontal frame to suspend, lift, or lower objects that move vertically in a track such as windows, doors, and panels.