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 | |
| 1 oz. | -0.0001 oz. to 0.0001 oz. | 5/8" | 2 1/4" | Stainless Steel | 6 | ASTM Class 6 Tolerances | 0000000 | 0000000 |
| 2 oz. | -0.0002 oz. to 0.0002 oz. | 13/16" | 2 1/4" | Stainless Steel | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
| 4 oz. | -0.0004 oz. to 0.0004 oz. | 1" | 2 1/4" | Stainless Steel | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
| 8 oz. | -0.0007 oz. to 0.0007 oz. | 1 1/4" | 4" | Stainless Steel | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
| 1 lbs. | -0.0001 lbs. to 0.0001 lbs. | 1 5/8" | 4 1/2" | Stainless Steel | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
| 2 lbs. | -0.0001 lbs. to 0.0001 lbs. | 2" | 5" | Stainless Steel | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
| 5 lbs. | -0.0004 lbs. to 0.0004 lbs. | 2 5/8" | 6 1/2" | Stainless Steel | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
| 10 lbs. | -0.0007 lbs. to 0.0007 lbs. | 3 1/2" | 6 1/4" | Stainless Steel | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
| 20 lbs. | -0.0011 lbs. to 0.0011 lbs. | 4" | 9 3/16" | Stainless Steel | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
| 1 kg | -0.0001 kg to 0.0001 kg | 2" | 5 3/8" | Stainless Steel | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
| 2 kg | -0.0002 kg to 0.0002 kg | 2 5/8" | 5 9/16" | Stainless Steel | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
| 5 kg | -0.0005 kg to 0.0005 kg | 3 3/4" | 6 3/8" | Stainless Steel | 6 | ASTM Class 6 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 | |
| 1 oz. | -0.0001 oz. to 0.0001 oz. | 5/8" | 2 1/4" | Stainless Steel | 6 | ASTM Class 6 Tolerances | 0000000 | 0000000 |
| 2 oz. | -0.0002 oz. to 0.0002 oz. | 13/16" | 2 1/4" | Stainless Steel | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
| 4 oz. | -0.0004 oz. to 0.0004 oz. | 1" | 2 1/4" | Stainless Steel | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
| 8 oz. | -0.0007 oz. to 0.0007 oz. | 1 1/4" | 4" | Stainless Steel | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
| 1 lbs. | -0.0001 lbs. to 0.0001 lbs. | 1 5/8" | 4 1/2" | Stainless Steel | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
| 2 lbs. | -0.0001 lbs. to 0.0001 lbs. | 2" | 5" | Stainless Steel | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
| 5 lbs. | -0.0004 lbs. to 0.0004 lbs. | 2 5/8" | 6 1/2" | Stainless Steel | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
| 10 lbs. | -0.0007 lbs. to 0.0007 lbs. | 3 1/2" | 6 1/4" | Stainless Steel | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
| 20 lbs. | -0.0011 lbs. to 0.0011 lbs. | 4" | 9 3/16" | Stainless Steel | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
| 1 kg | -0.0001 kg to 0.0001 kg | 2" | 5 3/8" | Stainless Steel | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
| 2 kg | -0.0002 kg to 0.0002 kg | 2 5/8" | 5 9/16" | Stainless Steel | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
| 5 kg | -0.0005 kg to 0.0005 kg | 3 3/4" | 6 3/8" | Stainless Steel | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
Legal-for-Trade Hanging Test Weights with Calibration Certificate
To ensure reliable 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. 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 | |
| 50 g | -0.01 g to 0.01 g | 13/16" | 2 1/2" | Stainless Steel | 5 | ASTM Class 5 Tolerances | 0000000 | 0000000 |
| 100 g | -0.02 g to 0.02 g | 1" | 3" | Stainless Steel | 5 | ASTM Class 5 Tolerances | 0000000 | 000000 |
| 200 g | -0.04 g to 0.04 g | 1 1/4" | 3 1/4" | Stainless Steel | 5 | ASTM Class 5 Tolerances | 0000000 | 000000 |
| 500 g | -0.07 g to 0.07 g | 1 3/4" | 4 1/4" | Stainless Steel | 5 | ASTM Class 5 Tolerances | 0000000 | 000000 |
Legal-for-Trade Hanging Test Weights
Designed for calibrating legal-for-trade scales, these weights have a top hook for attaching to hanging scales and a bottom hook for connecting 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 | |
| 50 g | -0.01 g to 0.01 g | 13/16" | 2 1/2" | Stainless Steel | 5 | ASTM Class 5 Tolerances | 0000000 | 0000000 |
| 100 g | -0.02 g to 0.02 g | 1" | 3" | Stainless Steel | 5 | ASTM Class 5 Tolerances | 0000000 | 000000 |
| 200 g | -0.04 g to 0.04 g | 1 1/4" | 3 1/4" | Stainless Steel | 5 | ASTM Class 5 Tolerances | 0000000 | 000000 |
| 500 g | -0.07 g to 0.07 g | 1 3/4" | 4 1/4" | Stainless Steel | 5 | ASTM Class 5 Tolerances | 0000000 | 000000 |
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 | |
| 1/2 lbs. | -0.0001 lbs. to 0.0001 lbs. | 3 3/4" | 5/16" | 9/16" | Cast Iron | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
| 1 lbs. | -0.00015 lbs. to 0.00015 lbs. | 5" | 5/16" | 9/16" | Cast Iron | 6 | ASTM Class 6 Tolerances | 0000000 | 00000 |
| 2 lbs. | -0.0002 lbs. to 0.0002 lbs. | 5" | 9/16" | 9/16" | Cast Iron | 6 | ASTM Class 6 Tolerances | 0000000 | 00000 |
| 5 lbs. | -0.0005 lbs. to 0.0005 lbs. | 5" | 1 1/8" | 9/16" | Cast Iron | 6 | ASTM Class 6 Tolerances | 0000000 | 00000 |
| 10 lbs. | -0.001 lbs. to 0.001 lbs. | 6" | 1 1/2" | 9/16" | Cast Iron | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
| 20 lbs. | -0.002 lbs. to 0.002 lbs. | 8" | 1 7/8" | 9/16" | Cast Iron | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
| 50 lbs. | -0.005 lbs. to 0.005 lbs. | 10 1/4" | 2 3/4" | 9/16" | Cast Iron | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
| 500 g | -0.05 g to 0.05 g | 5" | 5/16" | 9/16" | Cast Iron | 6 | ASTM Class 6 Tolerances | 0000000 | 00000 |
| 1 kg | -0.0001 kg to 0.0001 kg | 5" | 9/16" | 9/16" | Cast Iron | 6 | ASTM Class 6 Tolerances | 0000000 | 00000 |
| 2 kg | -0.0002 kg to 0.0002 kg | 5" | 1" | 9/16" | Cast Iron | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
| 5 kg | -0.0005 kg to 0.0005 kg | 6" | 1 11/16" | 9/16" | Cast Iron | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
| 10 kg | -0.001 kg to 0.001 kg | 8" | 1 15/16" | 9/16" | Cast Iron | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
| 20 kg | -0.002 kg to 0.002 kg | 10 1/4" | 2 3/8" | 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 | |
| 1/2 lbs. | -0.0001 lbs. to 0.0001 lbs. | 3 3/4" | 5/16" | 9/16" | Cast Iron | 6 | ASTM Class 6 Tolerances | 0000000 | 0000000 |
| 1 lbs. | -0.00015 lbs. to 0.00015 lbs. | 5" | 5/16" | 9/16" | Cast Iron | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
| 2 lbs. | -0.0002 lbs. to 0.0002 lbs. | 5" | 9/16" | 9/16" | Cast Iron | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
| 5 lbs. | -0.0005 lbs. to 0.0005 lbs. | 5" | 1 1/8" | 9/16" | Cast Iron | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
| 10 lbs. | -0.001 lbs. to 0.001 lbs. | 6" | 1 1/2" | 9/16" | Cast Iron | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
| 20 lbs. | -0.002 lbs. to 0.002 lbs. | 8" | 1 7/8" | 9/16" | Cast Iron | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
| 50 lbs. | -0.005 lbs. to 0.005 lbs. | 10 1/4" | 2 3/4" | 9/16" | Cast Iron | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
| 500 g | -0.05 g to 0.05 g | 5" | 5/16" | 9/16" | Cast Iron | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
| 1 kg | -0.0001 kg to 0.0001 kg | 5" | 9/16" | 9/16" | Cast Iron | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
| 2 kg | -0.0002 kg to 0.0002 kg | 5" | 1" | 9/16" | Cast Iron | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
| 5 kg | -0.0005 kg to 0.0005 kg | 6" | 1 11/16" | 9/16" | Cast Iron | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
| 10 kg | -0.001 kg to 0.001 kg | 8" | 1 15/16" | 9/16" | Cast Iron | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
| 20 kg | -0.002 kg to 0.002 kg | 10 1/4" | 2 3/8" | 9/16" | Cast Iron | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
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 | |
| 0.5 lbs. | 50 lbs. | -0.01 lbs. to 0.01 lbs. | 2 7/8" | 9/16" | 1/2" | Cast Iron | 7 | ASTM Class 7 Tolerances | 0000000 | 000000 |
| 0.5 lbs. | 100 lbs. | -0.01 lbs. to 0.01 lbs. | 2 7/8" | 9/16" | 1/2" | Cast Iron | 7 | ASTM Class 7 Tolerances | 0000000 | 00000 |
| 1 lbs. | 100 lbs. | -0.01 lbs. to 0.01 lbs. | 4 1/16" | 5/8" | 1/2" | Cast Iron | 7 | ASTM Class 7 Tolerances | 0000000 | 00000 |
| 1 lbs. | 200 lbs. | -0.02 lbs. to 0.02 lbs. | 3 17/32" | 1/2" | 1/2" | Cast Iron | 7 | ASTM Class 7 Tolerances | 0000000 | 00000 |
| 2 lbs. | 200 lbs. | -0.02 lbs. to 0.02 lbs. | 4 1/16" | 15/16" | 1/2" | Cast Iron | 7 | ASTM Class 7 Tolerances | 0000000 | 00000 |
| 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 | 00000 |