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. They’re used to calibrate scales. All 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 g | -0.0045 g to 0.0045 g | 3/16" | 5/16" | Stainless Steel | 7 | ASTM Class 7 Tolerances | 0000000 | 000000 |
2 g | -0.007 g to 0.007 g | 5/16" | 5/16" | Stainless Steel | 7 | ASTM Class 7 Tolerances | 0000000 | 00000 |
5 g | -0.013 g to 0.013 g | 3/8" | 1/2" | Stainless Steel | 7 | ASTM Class 7 Tolerances | 0000000 | 00000 |
10 g | -0.021 g to 0.021 g | 7/16" | 5/8" | Stainless Steel | 7 | ASTM Class 7 Tolerances | 0000000 | 00000 |
20 g | -0.033 g to 0.033 g | 9/16" | 3/4" | Stainless Steel | 7 | ASTM Class 7 Tolerances | 0000000 | 00000 |
50 g | -0.062 g to 0.062 g | 3/4" | 1 1/16" | Stainless Steel | 7 | ASTM Class 7 Tolerances | 0000000 | 00000 |
100 g | -0.1 g to 0.1 g | 1" | 1 1/4" | Stainless Steel | 7 | ASTM Class 7 Tolerances | 0000000 | 00000 |
200 g | -0.16 g to 0.16 g | 1 1/4" | 1 1/2" | Stainless Steel | 7 | ASTM Class 7 Tolerances | 0000000 | 00000 |
500 g | -0.3 g to 0.3 g | 1 5/8" | 2 1/4" | Stainless Steel | 7 | ASTM Class 7 Tolerances | 0000000 | 000000 |
1,000 g | -0.47 g to 0.47 g | 2" | 2 7/8" | Stainless Steel | 7 | ASTM Class 7 Tolerances | 0000000 | 000000 |
2,000 g | -0.75 g to 0.75 g | 2 5/16" | 3 7/8" | Stainless Steel | 7 | ASTM Class 7 Tolerances | 0000000 | 000000 |
Test Weight Sets with Calibration Certificate



A certificate of calibration traceable to NIST states that these test weight sets have passed a test for accuracy. Each test weight is marked with its weight.
Number of Pieces | Includes | Material | Class | Specifications Met | Each | |
12 | Test Weights (1 each): 1 g, 5 g, 20 g, 50 g, 200 g, 500 g Test Weights (2 each): 2 g, 10 g, 100 g Plastic Case | Stainless Steel | 7 | ASTM Class 7 Tolerances | 0000000 | 0000000 |
13 | Test Weights (1 each): 1 g, 5 g, 20 g, 50 g, 200 g, 500 g, 1,000 g Test Weights (2 each): 2 g, 10 g, 100 g Plastic Case | Stainless Steel | 7 | ASTM Class 7 Tolerances | 0000000 | 000000 |
14 | Test Weights (1 each): 1 g, 5 g, 10 g, 50 g, 100 g, 500 g, 1,000 g, 2,000 g Test Weights (2 each): 2 g, 20 g, 200 g Plastic Case | Stainless Steel | 7 | ASTM Class 7 Tolerances | 0000000 | 000000 |
Test Weights

Calibrate your scale with these test weights. 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 | |
1 g | -0.0045 g to 0.0045 g | 3/16" | 5/16" | Stainless Steel | 7 | ASTM Class 7 Tolerances | 0000000 | 000000 |
2 g | -0.007 g to 0.007 g | 5/16" | 5/16" | Stainless Steel | 7 | ASTM Class 7 Tolerances | 0000000 | 00000 |
5 g | -0.013 g to 0.013 g | 3/8" | 1/2" | Stainless Steel | 7 | ASTM Class 7 Tolerances | 0000000 | 00000 |
10 g | -0.021 g to 0.021 g | 7/16" | 5/8" | Stainless Steel | 7 | ASTM Class 7 Tolerances | 0000000 | 00000 |
20 g | -0.033 g to 0.033 g | 9/16" | 3/4" | Stainless Steel | 7 | ASTM Class 7 Tolerances | 0000000 | 00000 |
50 g | -0.062 g to 0.062 g | 3/4" | 1 1/16" | Stainless Steel | 7 | ASTM Class 7 Tolerances | 0000000 | 00000 |
100 g | -0.1 g to 0.1 g | 1" | 1 1/4" | Stainless Steel | 7 | ASTM Class 7 Tolerances | 0000000 | 00000 |
200 g | -0.16 g to 0.16 g | 1 1/4" | 1 1/2" | Stainless Steel | 7 | ASTM Class 7 Tolerances | 0000000 | 00000 |
500 g | -0.3 g to 0.3 g | 1 5/8" | 2 1/4" | Stainless Steel | 7 | ASTM Class 7 Tolerances | 0000000 | 00000 |
1,000 g | -0.47 g to 0.47 g | 2" | 2 7/8" | Stainless Steel | 7 | ASTM Class 7 Tolerances | 0000000 | 000000 |
2,000 g | -0.75 g to 0.75 g | 2 5/16" | 3 7/8" | Stainless Steel | 7 | ASTM Class 7 Tolerances | 0000000 | 000000 |
Test Weight Sets



Use these test weights to calibrate your scale. Each test weight is marked with its weight.
Number of Pieces | Includes | Material | Class | Specifications Met | Each | |
12 | Test Weights (1 each): 1 g, 5 g, 20 g, 50 g, 200 g, 500 g Test Weights (2 each): 2 g, 10 g, 100 g Plastic Case | Stainless Steel | 7 | ASTM Class 7 Tolerances | 0000000 | 0000000 |
13 | Test Weights (1 each): 1 g, 5 g, 20 g, 50 g, 200 g, 500 g, 1,000 g Test Weights (2 each): 2 g, 10 g, 100 g Plastic Case | Stainless Steel | 7 | ASTM Class 7 Tolerances | 0000000 | 000000 |
14 | Test Weights (1 each): 1 g, 5 g, 10 g, 50 g, 100 g, 500 g, 1,000 g, 2,000 g Test Weights (2 each): 2 g, 20 g, 200 g Plastic Case | Stainless Steel | 7 | ASTM Class 7 Tolerances | 0000000 | 000000 |
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.
Grip-Handle Test Weights

A handle makes it easy to move these test weights. They are marked with their weight.
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 |