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.
Wt. | Tolerance | Dia. | Ht. | Material | Class | Specifications Met | Each | |
1 lbs. | -0.00015 lbs. to 0.00015 lbs. | 1 1/2" | 2 3/16" | Stainless Steel | 5 | ASTM Class 5 Tolerances | 0000000 | 0000000 |
Legal-for-Trade Test Weights

Calibrate legal-for-trade scales. These test weights are marked with their weight.
Wt. | Tolerance | Dia. | Ht. | Material | Class | Specifications Met | Each | |
1 lbs. | -0.00015 lbs. to 0.00015 lbs. | 1 1/2" | 2 3/16" | Stainless Steel | 5 | ASTM Class 5 Tolerances | 0000000 | 000000 |
Hanging Test Weights

The top hook lets you attach these weights to hanging scales, and the bottom hook lets you connect multiple weights in a series. The bottom hook can also retract into the weight for use with bench-top scales. Weights are marked with their weight.
Wt. | Tolerance | Dia. | Ht. | Material | Class | Specifications Met | Each | |
1 lbs. | -0.0001 lbs. to 0.0001 lbs. | 1 5/8" | 4 1/2" | Stainless Steel | 6 | ASTM Class 6 Tolerances | 0000000 | 0000000 |
Hanging Test Weights with Calibration Certificate

The included certificate of calibration traceable to NIST states that these test weights have passed a test for accuracy. The top hook lets you attach them to hanging scales, and the bottom hook lets you connect multiple weights in a series. The bottom hook can also retract into the weight for use with bench-top scales. Weights are marked with their weight.
Wt. | Tolerance | Dia. | Ht. | Material | Class | Specifications Met | Each | |
1 lbs. | -0.0001 lbs. to 0.0001 lbs. | 1 5/8" | 4 1/2" | Stainless Steel | 6 | ASTM Class 6 Tolerances | 0000000 | 0000000 |
Interlocking Test Weights
Stack multiple grooved weights together to calibrate your scales. Weights are marked with their weight.
Optional hangers (sold separately) let you test and calibrate hanging scales.

Wt. | Tolerance | Dia. | Ht. | Slot Width | Material | Class | Specifications Met | Each | |
1 lbs. | -0.00015 lbs. to 0.00015 lbs. | 5" | 5/16" | 9/16" | Cast Iron | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
Interlocking Test Weights with Calibration Certificate
These test weights come with a certificate of calibration traceable to NIST that states they’ve passed a test for accuracy. Stack multiple weights together to calibrate your scales. Weights are marked with their weight.

Wt. | Tolerance | Dia. | Ht. | Slot Width | Material | Class | Specifications Met | Each | |
1 lbs. | -0.00015 lbs. to 0.00015 lbs. | 5" | 5/16" | 9/16" | Cast Iron | 6 | ASTM Class 6 Tolerances | 0000000 | 0000000 |
Counterbalance Weights for Beam Scales
Add these stackable weights to the end of a beam scale to increase its total capacity. They’re also known as counterpoise weights. All are marked with their weight.
Optional hangers (sold separately) let you hang weights on beam scales.
