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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.
| 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 | ANSI/ASTM Class 7 Tolerances | 0000000 | 000000 |
| 2 g | -0.007 g to 0.007 g | 5/16" | 5/16" | Stainless Steel | 7 | ANSI/ASTM Class 7 Tolerances | 0000000 | 00000 |
| 5 g | -0.013 g to 0.013 g | 3/8" | 1/2" | Stainless Steel | 7 | ANSI/ASTM Class 7 Tolerances | 0000000 | 00000 |
| 10 g | -0.021 g to 0.021 g | 7/16" | 5/8" | Stainless Steel | 7 | ANSI/ASTM Class 7 Tolerances | 0000000 | 00000 |
| 20 g | -0.033 g to 0.033 g | 9/16" | 3/4" | Stainless Steel | 7 | ANSI/ASTM Class 7 Tolerances | 0000000 | 00000 |
| 50 g | -0.062 g to 0.062 g | 3/4" | 1 1/16" | Stainless Steel | 7 | ANSI/ASTM Class 7 Tolerances | 0000000 | 00000 |
| 100 g | -0.1 g to 0.1 g | 1" | 1 1/4" | Stainless Steel | 7 | ANSI/ASTM Class 7 Tolerances | 0000000 | 00000 |
| 200 g | -0.16 g to 0.16 g | 1 1/4" | 1 1/2" | Stainless Steel | 7 | ANSI/ASTM Class 7 Tolerances | 0000000 | 00000 |
| 500 g | -0.3 g to 0.3 g | 1 5/8" | 2 1/4" | Stainless Steel | 7 | ANSI/ASTM Class 7 Tolerances | 0000000 | 00000 |
| 1,000 g | -0.47 g to 0.47 g | 2" | 2 7/8" | Stainless Steel | 7 | ANSI/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 | ANSI/ASTM Class 7 Tolerances | 0000000 | 000000 |
Legal-for-Trade Test Weights with Calibration Certificate
To ensure accurate calibration of legal-for-trade scales, these test weights include a certificate of calibration traceable to ASTM states they have passed a test for accuracy. They are makred with their weight.
| Wt. | Tolerance | Dia. | Ht. | Material | Class | Specifications Met | Each | |
| 1/2 oz. | -0.00009 oz. to 0.00009 oz. | 1/2" | 9/16" | Stainless Steel | 5 | ASTM Class 5 Tolerances | 0000000 | 0000000 |
| 1 oz. | -0.00019 oz. to 0.00019 oz. | 5/8" | 13/16" | Stainless Steel | 5 | ASTM Class 5 Tolerances | 0000000 | 000000 |
| 4 oz. | -0.00081 oz. to 0.00081 oz. | 1" | 1 3/16" | Stainless Steel | 5 | ASTM Class 5 Tolerances | 0000000 | 000000 |
| 8 oz. | -0.00158 oz. to 0.00158 oz. | 1 1/4" | 1 9/16" | Stainless Steel | 5 | ASTM Class 5 Tolerances | 0000000 | 000000 |
| 12 oz. | -0.00246 oz. to 0.00246 oz. | 1 3/8" | 2" | Stainless Steel | 5 | ASTM Class 5 Tolerances | 0000000 | 000000 |
| 1 lbs. | -0.00015 lbs. to 0.00015 lbs. | 1 1/2" | 2 3/16" | Stainless Steel | 5 | ASTM Class 5 Tolerances | 0000000 | 000000 |
| 2 lbs. | -0.0002 lbs. to 0.0002 lbs. | 1 7/8" | 2 11/16" | Stainless Steel | 5 | ASTM Class 5 Tolerances | 0000000 | 000000 |
| 3 lbs. | -0.0003 lbs. to 0.0003 lbs. | 2 1/4" | 2 13/16" | Stainless Steel | 5 | ASTM Class 5 Tolerances | 0000000 | 000000 |
| 5 lbs. | -0.0005 lbs. to 0.0005 lbs. | 2 1/2" | 3 3/4" | Stainless Steel | 5 | ASTM Class 5 Tolerances | 0000000 | 000000 |
| 10 lbs. | -0.00099 lbs. to 0.00099 lbs. | 3 1/4" | 4 7/16" | Stainless Steel | 5 | ASTM Class 5 Tolerances | 0000000 | 000000 |
| 1 g | -0.0009 g to 0.0009 g | 3/16" | 1/4" | Stainless Steel | 5 | ASTM Class 5 Tolerances | 0000000 | 00000 |
| 2 g | -0.0011 g to 0.0011 g | 1/4" | 5/16" | Stainless Steel | 5 | ASTM Class 5 Tolerances | 0000000 | 000000 |
| 5 g | -0.0015 g to 0.0015 g | 3/8" | 3/8" | Stainless Steel | 5 | ASTM Class 5 Tolerances | 0000000 | 00000 |
| 20 g | -0.004 g to 0.004 g | 9/16" | 11/16" | Stainless Steel | 5 | ASTM Class 5 Tolerances | 0000000 | 000000 |
| 50 g | -0.01 g to 0.01 g | 3/4" | 7/8" | Stainless Steel | 5 | ASTM Class 5 Tolerances | 0000000 | 000000 |
| 100 g | -0.02 g to 0.02 g | 1" | 1" | Stainless Steel | 5 | ASTM Class 5 Tolerances | 0000000 | 000000 |
| 200 g | -0.04 g to 0.04 g | 1 1/4" | 1 3/8" | Stainless Steel | 5 | ASTM Class 5 Tolerances | 0000000 | 000000 |
| 300 g | -0.06 g to 0.06 g | 1 3/8" | 1 11/16" | Stainless Steel | 5 | ASTM Class 5 Tolerances | 0000000 | 000000 |
| 400 g | -0.07 g to 0.07 g | 1 1/2" | 1 7/8" | Stainless Steel | 5 | ASTM Class 5 Tolerances | 0000000 | 000000 |
| 500 g | -0.07 g to 0.07 g | 1 1/2" | 2 3/8" | Stainless Steel | 5 | ASTM Class 5 Tolerances | 0000000 | 000000 |
| 1 kg | -0.0001 kg to 0.0001 kg | 2" | 2 5/8" | Stainless Steel | 5 | ASTM Class 5 Tolerances | 0000000 | 000000 |
| 2 kg | -0.0002 kg to 0.0002 kg | 2 1/2" | 3 5/16" | Stainless Steel | 5 | ASTM Class 5 Tolerances | 0000000 | 000000 |
| 3 kg | -0.0003 kg to 0.0003 kg | 2 11/16" | 4 1/8" | Stainless Steel | 5 | ASTM Class 5 Tolerances | 0000000 | 000000 |
| 5 kg | -0.0005 kg to 0.0005 kg | 3 3/16" | 4 7/8" | Stainless Steel | 5 | ASTM Class 5 Tolerances | 0000000 | 000000 |
Test Weight Sets with Calibration Certificate
12-Piece Set
13-Piece Set
14-Piece Set
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 | ANSI/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 | ANSI/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 | ANSI/ASTM Class 7 Tolerances | 0000000 | 000000 |
Precision Test Weights with Calibration Certificate
30 g to 500 g
1,000 g to 5 kg
Often used to calibrate precision scales, these highly accurate 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 | Includes | Each | |
| 30 g | -0.00007 g to 0.00007 g | 3/4" | 5/8" | Stainless Steel | 1 | ANSI/ASTM Class 1 Tolerances | Glove; Plastic Case | 00000000 | 0000000 |
| 40 g | -0.00007 g to 0.00007 g | 3/4" | 13/16" | Stainless Steel | 1 | ANSI/ASTM Class 1 Tolerances | Glove; Plastic Case | 00000000 | 000000 |
| 50 g | -0.0001 g to 0.0001 g | 3/4" | 1" | Stainless Steel | 1 | ANSI/ASTM Class 1 Tolerances | Glove; Plastic Case | 00000000 | 000000 |
| 100 g | -0.00025 g to 0.00025 g | 1" | 1 1/16" | Stainless Steel | 1 | ANSI/ASTM Class 1 Tolerances | Glove; Plastic Case | 00000000 | 000000 |
| 150 g | -0.00038 g to 0.00038 g | 1 1/8" | 1 3/16" | Stainless Steel | 1 | ANSI/ASTM Class 1 Tolerances | Glove; Plastic Case | 00000000 | 000000 |
| 200 g | -0.0005 g to 0.0005 g | 1 3/16" | 1 9/16" | Stainless Steel | 1 | ANSI/ASTM Class 1 Tolerances | Glove; Plastic Case | 00000000 | 000000 |
| 300 g | -0.00075 g to 0.00075 g | 1 1/2" | 1 1/2" | Stainless Steel | 1 | ANSI/ASTM Class 1 Tolerances | Glove; Plastic Case | 00000000 | 000000 |
| 400 g | -0.00098 g to 0.00098 g | 1 1/2" | 1 7/8" | Stainless Steel | 1 | ANSI/ASTM Class 1 Tolerances | Glove; Plastic Case | 00000000 | 000000 |
| 500 g | -0.0012 g to 0.0012 g | 1 1/2" | 2 5/16" | Stainless Steel | 1 | ANSI/ASTM Class 1 Tolerances | Glove; Plastic Case | 00000000 | 000000 |
| 1,000 g | -0.0025 g to 0.0025 g | 2" | 2 9/16" | Stainless Steel | 1 | ANSI/ASTM Class 1 Tolerances | Glove; Plastic Case | 00000000 | 000000 |
| 2 kg | -0.00001 kg to 0.00001 kg | 2 1/2" | 3 5/16" | Stainless Steel | 1 | ANSI/ASTM Class 1 Tolerances | Glove; Plastic Case | 00000000 | 000000 |
| 4 kg | -0.00098 kg to 0.00098 kg | 3" | 4 9/16" | Stainless Steel | 1 | ANSI/ASTM Class 1 Tolerances | Glove; Plastic Case | 00000000 | 000000 |
| 5 kg | -0.00001 kg to 0.00001 kg | 3 1/4" | 4 7/8" | Stainless Steel | 1 | ANSI/ASTM Class 1 Tolerances | Glove; Plastic Case | 00000000 | 000000 |
Legal-for-Trade Test Weight
Sets with Calibration Certificate
11-Piece Set
12-Piece Set
13-Piece Set
17-Piece Set
20-Piece Set
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. Each test weight is marked with its weight.
| Number of Pieces | Includes | Material | Class | Specifications Met | Each | |
| 11 | Test Weights (1 each): 0.001 lbs., 0.005 lbs., 0.01 lbs., 0.05 lbs., 0.1 lbs. Test Weights (2 each): 0.002 lbs., 0.02 lbs., 0.2 lbs. Jar Leather Case | Stainless Steel | 5 | ASTM Class 5 Tolerances | 0000000 | 0000000 |
| 12 | Test Weights (1 each): 1 g, 5 g, 10 g, 50 g, 100 g, 500 g Test Weights (2 each): 2 g, 20 g, 200 g Plastic Case | Stainless Steel | 5 | ASTM Class 5 Tolerances | 0000000 | 000000 |
| 13 | Test Weights (1 each): 1 g, 5 g, 10 g, 50 g, 100 g, 500 g, 1,000 g Test Weights (2 each): 2 g, 20 g, 200 g Leather Case | Stainless Steel | 5 | ASTM Class 5 Tolerances | 0000000 | 000000 |
| 17 | Test Weights (1 each): 0.001 lbs., 0.005 lbs., 0.01 lbs., 0.05 lbs., 0.1 lbs., .5 lbs., 1 lbs., 5 lbs., 10 lbs. Test Weights (2 each): 0.002 lbs., 0.02 lbs., 0.2 lbs., 2 lbs. Glove Plastic-Covered Cardboard Case | Stainless Steel | 5 | ASTM Class 5 Tolerances | 0000000 | 00000000 |
| 20 | Test Weights (1 each): 1 mg, 5 mg, 10 mg, 50 mg, 100 mg, 500 mg, 1 g, 5 g, 10 g, 50 g Test Weights (2 each): 2 mg, 20 mg, 200 mg, 2 g, 20 g Tweezer Plastic Case | Stainless Steel | 5 | ASTM Class 5 Tolerances | 0000000 | 000000 |
Precision Test Weight Sets with Calibration Certificate
9-Piece Set
17-Piece Set
21-Piece Set
These highly accurate test weight sets for calibrating precision scales come with a certificate of calibration traceable to NIST that states they’ve passed a test for accuracy. Each test weight is marked with its weight.
| Number of Pieces | Includes | Material | Class | Specifications Met | Each | |
| 9 | Test Weights (1 each): 1 g, 5 g, 10 g, 50 g, 100 g Test Weights (2 each): 2 g, 20 g Plastic Case | 304 Stainless Steel, 316 Stainless Steel | 1 | ANSI/ASTM Class 1 Tolerances | 0000000 | 000000000 |
| 17 | Test Weights (1 each): 10 mg, 50 mg, 100 mg, 500 mg, 1 g, 5 g, 10 g, 50 g, 100 g Test Weights (2 each): 20 mg, 200 mg, 2 g, 20 g Plastic Case | 304 Stainless Steel, 316 Stainless Steel | 1 | ANSI/ASTM Class 1 Tolerances | 0000000 | 00000000 |
| 21 | Test Weights (1 each): 1 mg, 5 mg, 10 mg, 50 mg, 100 mg, 500 mg, 1 g, 5 g, 10 g, 50 g, 100 g Test Weights (2 each): 2 mg, 20 mg, 200 mg, 2 g, 20 g Plastic Case | 304 Stainless Steel, 316 Stainless Steel, Aluminum | 1 | ANSI/ASTM Class 1 Tolerances | 0000000 | 00000000 |
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 or NIST 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.
| Wt. | Tolerance | Lg. | Wd. | Ht. | Material | Class | Specifications Met | Each | |
| 10 kg | -0.001 kg to 0.001 kg | 4 1/2" | 6" | 5" | Cast Iron | F | NIST Class F Tolerances | 0000000 | 0000000 |
| 20 kg | -0.002 kg to 0.002 kg | 5 5/8" | 7 5/8" | 5 15/16" | Cast Iron | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
| 25 kg | -0.0025 kg to 0.0025 kg | 5 1/2" | 7 11/16" | 7 1/8" | Cast Iron | F | NIST Class F Tolerances | 0000000 | 000000 |
| 20 lbs. | -0.002 lbs. to 0.002 lbs. | 4 1/2" | 5 3/4" | 5 1/8" | Cast Iron | F | NIST Class F Tolerances | 0000000 | 000000 |
| 25 lbs. | -0.002 lbs. to 0.002 lbs. | 4 1/2" | 6 1/2" | 4 15/16" | Cast Iron | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
| 50 lbs. | -0.005 lbs. to 0.005 lbs. | 5 1/2" | 7 15/16" | 6 9/16" | Cast Iron | 6 | ASTM Class 6 Tolerances | 0000000 | 000000 |
| 100 lbs. | -0.01 lbs. to 0.01 lbs. | 7" | 9 1/8" | 7 7/8" | Cast Iron | F | NIST Class F Tolerances | 0000000 | 000000 |
| 500 lbs. | -0.05 lbs. to 0.05 lbs. | 12" | 11 1/2" | 15 3/4" | Cast Iron | F | NIST Class F Tolerances | 0000000 | 00000000 |
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.
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 oz. | -0.0001 oz. to 0.0001 oz. | 5/8" | 2 1/4" | Stainless Steel | 6 | ANSI/ASTM Class 6 Tolerances | 0000000 | 0000000 |
| 2 oz. | -0.0002 oz. to 0.0002 oz. | 13/16" | 2 1/4" | Stainless Steel | 6 | ANSI/ASTM Class 6 Tolerances | 0000000 | 000000 |
| 4 oz. | -0.0004 oz. to 0.0004 oz. | 1" | 2 1/4" | Stainless Steel | 6 | ANSI/ASTM Class 6 Tolerances | 0000000 | 000000 |
| 8 oz. | -0.0007 oz. to 0.0007 oz. | 1 1/4" | 4" | Stainless Steel | 6 | ANSI/ASTM Class 6 Tolerances | 0000000 | 000000 |
| 1 lbs. | -0.0001 lbs. to 0.0001 lbs. | 1 5/8" | 4 1/2" | Stainless Steel | 6 | ANSI/ASTM Class 6 Tolerances | 0000000 | 000000 |
| 2 lbs. | -0.0001 lbs. to 0.0001 lbs. | 2" | 5" | Stainless Steel | 6 | ANSI/ASTM Class 6 Tolerances | 0000000 | 000000 |
| 5 lbs. | -0.0004 lbs. to 0.0004 lbs. | 2 5/8" | 6 1/2" | Stainless Steel | 6 | ANSI/ASTM Class 6 Tolerances | 0000000 | 000000 |
| 10 lbs. | -0.0007 lbs. to 0.0007 lbs. | 3 1/2" | 6 1/4" | Stainless Steel | 6 | ANSI/ASTM Class 6 Tolerances | 0000000 | 000000 |
| 20 lbs. | -0.0011 lbs. to 0.0011 lbs. | 4" | 9 3/16" | Stainless Steel | 6 | ANSI/ASTM Class 6 Tolerances | 0000000 | 000000 |
| 1 kg | -0.0001 kg to 0.0001 kg | 2" | 5 3/8" | Stainless Steel | 6 | ANSI/ASTM Class 6 Tolerances | 0000000 | 000000 |
| 2 kg | -0.0002 kg to 0.0002 kg | 2 5/8" | 5 9/16" | Stainless Steel | 6 | ANSI/ASTM Class 6 Tolerances | 0000000 | 000000 |
| 5 kg | -0.0005 kg to 0.0005 kg | 3 3/4" | 6 3/8" | Stainless Steel | 6 | ANSI/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.
Shown with Optional Hanger
| 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 | ANSI/ASTM Class 6 Tolerances | 0000000 | 0000000 |
| 1 lbs. | -0.00015 lbs. to 0.00015 lbs. | 5" | 5/16" | 9/16" | Cast Iron | 6 | ANSI/ASTM Class 6 Tolerances | 0000000 | 000000 |
| 2 lbs. | -0.0002 lbs. to 0.0002 lbs. | 5" | 9/16" | 9/16" | Cast Iron | 6 | ANSI/ASTM Class 6 Tolerances | 0000000 | 000000 |
| 5 lbs. | -0.0005 lbs. to 0.0005 lbs. | 5" | 1 1/8" | 9/16" | Cast Iron | 6 | ANSI/ASTM Class 6 Tolerances | 0000000 | 000000 |
| 10 lbs. | -0.001 lbs. to 0.001 lbs. | 6" | 1 1/2" | 9/16" | Cast Iron | 6 | ANSI/ASTM Class 6 Tolerances | 0000000 | 000000 |
| 20 lbs. | -0.002 lbs. to 0.002 lbs. | 8" | 1 7/8" | 9/16" | Cast Iron | 6 | ANSI/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 | ANSI/ASTM Class 6 Tolerances | 0000000 | 000000 |
| 500 g | -0.05 g to 0.05 g | 5" | 5/16" | 9/16" | Cast Iron | 6 | ANSI/ASTM Class 6 Tolerances | 0000000 | 000000 |
| 1 kg | -0.0001 kg to 0.0001 kg | 5" | 9/16" | 9/16" | Cast Iron | 6 | ANSI/ASTM Class 6 Tolerances | 0000000 | 000000 |
| 2 kg | -0.0002 kg to 0.0002 kg | 5" | 1" | 9/16" | Cast Iron | 6 | ANSI/ASTM Class 6 Tolerances | 0000000 | 000000 |
| 5 kg | -0.0005 kg to 0.0005 kg | 6" | 1 11/16" | 9/16" | Cast Iron | 6 | ANSI/ASTM Class 6 Tolerances | 0000000 | 000000 |
| 10 kg | -0.001 kg to 0.001 kg | 8" | 1 15/16" | 9/16" | Cast Iron | 6 | ANSI/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 | ANSI/ASTM Class 6 Tolerances | 0000000 | 000000 |
