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 | |
| 5 lbs. | -0.0005 lbs. to 0.0005 lbs. | 2 1/2" | 3 3/4" | 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.
For technical drawings and 3-D models, click on a part number.
| Wt. | Tolerance | Dia. | Ht. | Material | Class | Specifications Met | Each | |
| 5 lbs. | -0.0005 lbs. to 0.0005 lbs. | 2 1/2" | 3 3/4" | Stainless Steel | 5 | ASTM Class 5 Tolerances | 0000000 | 0000000 |
Legal-for-Trade Grip-Handle Test Weights with Calibration Certificate
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. They have a handle for easy carrying and are used to calibrate legal-for-trade scales. All are marked with their weight.
For technical drawings and 3-D models, click on a part number.
| Wt. | Tolerance | Lg. | Wd. | Ht. | Material | Class | Specifications Met | Each | |
| 5 lbs. | -0.0005 lbs. to 0.0005 lbs. | 3 7/8" | 2 3/8" | 3 1/8" | Cast Iron | 6 | ASTM Class 6 Tolerances | 00000000 | 0000000 |
Grip-Handle Test Weights with Calibration Certificate
A certificate of calibration traceable to NIST states that these weights have passed a test for accuracy. They have a handle for easy carrying and are used to calibrate scales. All are marked with their weight.
| Wt. | Tolerance | Lg. | Wd. | Ht. | Material | Class | Specifications Met | Each | |
| 5 lbs. | -0.0016 lbs. to 0.0016 lbs. | 2 9/16" | 4" | 3 1/4" | Cast Iron | 7 | ASTM Class 7 Tolerances | 0000000 | 0000000 |
Grip-Handle Test Weights
A handle makes it easy to move these test weights. They are marked with their weight.
| Wt. | Tolerance | Lg. | Wd. | Ht. | Material | Class | Specifications Met | Each | |
| 5 lbs. | -0.0016 lbs. to 0.0016 lbs. | 2 9/16" | 4" | 3 1/4" | Cast Iron | 7 | ASTM Class 7 Tolerances | 0000000 | 000000 |
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.
For technical drawings and 3-D models, click on a part number.
| Wt. | Tolerance | Dia. | Ht. | Material | Class | Specifications Met | Each | |
| 5 lbs. | -0.0004 lbs. to 0.0004 lbs. | 2 5/8" | 6 1/2" | Stainless Steel | 6 | ASTM Class 6 Tolerances | 0000000 | 0000000 |
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.
For technical drawings and 3-D models, click on a part number.
| Wt. | Tolerance | Dia. | Ht. | Material | Class | Specifications Met | Each | |
| 5 lbs. | -0.0004 lbs. to 0.0004 lbs. | 2 5/8" | 6 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.
For technical drawings and 3-D models, click on a part number.
| Wt. | Tolerance | Dia. | Ht. | Slot Width | Material | Class | Specifications Met | Each | |
| 5 lbs. | -0.0005 lbs. to 0.0005 lbs. | 5" | 1 1/8" | 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.
For technical drawings and 3-D models, click on a part number.
| Wt. | Tolerance | Dia. | Ht. | Slot Width | Material | Class | Specifications Met | Each | |
| 5 lbs. | -0.0005 lbs. to 0.0005 lbs. | 5" | 1 1/8" | 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.
| Wt. | Increased Capacity | Tolerance | Dia. | Ht. | Slot Wd. | Material | Class | Specifications Met | Each | |
| 5 lbs. | 500 lbs. | -0.1 lbs. to 0.1 lbs. | 3 3/4" | 2 3/16" | 1/2" | Cast Iron | 7 | ASTM Class 7 Tolerances | 0000000 | 000000 |
Weight Bags
Hold down equipment and balance loads with these bags.
Bags filled with sand are an economical choice, but their weight will change slightly over time as the sand dries out.
Bags filled with stainless steel shot have tight weight tolerances, so they can also be used as test weights.