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Square Drive Torque Tool Testers


Check the accuracy of torque wrenches and screwdrivers—place your tool onto the tester with the included square drive connector and turn. The main pointer shows torque as it's measured; the memory pointer shows the maximum torque reached. Use these testers with hand tools only.
Note: For the most accurate performance, the maximum torque you apply should fall near the middle of the tester’s torque range.
For technical drawings and 3-D models, click on a part number.
Accuracy | Mounting Holes | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Square Drive Size | Torque Range | Graduations | Torque-Measuring Direction | Clockwise | Counterclockwise | Lg. | Wd. | Ht. | Material | Mounting Fasteners Included | No. of | Dia. | Each | |
With Calibration Certificate Traceable to NIST | ||||||||||||||
ft.-lbs. | ||||||||||||||
3/4" | 120 to 600 ft.-lbs. | 10 ft.-lbs. | Clockwise and Counterclockwise | ±2% | ±2% | 14 1/2" | 4 3/4" | 3 3/4" | Steel | No | 6 | 1/4" | 0000000 | 0000000 |
High-Accuracy Torque Tool Testers
Accurate to within ±1%, these torque testers are often used to check the accuracy of torque wrenches and screwdrivers on assembly lines. They come with a calibration certificate traceable to NIST that states they’ve passed a test for accuracy. To test, place your torque wrench or screwdriver onto the tester with the included square drive connection and turn. These testers display torque as it's measured and the maximum torque reached. For accuracy when testing click-style wrenches, they also show the first torque peak reached. They’re not for use with impact or pulse tools.
Note: For the most accurate readings, the maximum torque you're applying should fall near the middle of the tester's torque range.
Bench-top testers can be mounted to your work surface. Those with a gooseneck display can be bent until you can clearly see the test results. Mount these testers to your workbench with a mounting bracket (sold separately). Or, carry them where they’re needed using the included case.


Accuracy | Mounting Holes | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Square Drive Size | Torque Range | Graduations | Torque-Measuring Direction | Clockwise | Counterclockwise | For Tool Type | Ht. | Wd. | Dp. | Mounting Fasteners Included | No. of | Dia. | Batteries Included | Includes | Each | |
With Calibration Certificate with Test Data Traceable to NIST Certificate of Calibration | ||||||||||||||||
in.-lbs., ft.-lbs., Nm | ||||||||||||||||
3/4" | 720 to 7,200 in.-lbs. 60 to 600 ft.-lbs. 81.3 to 813 Nm | 1 in.-lbs. 0.1 ft.-lbs. 0.1 Nm | Clockwise and Counterclockwise | ±1% | ±1% | Hand Tools Only | 4 1/2" | 6" | 6" | No | 8 | 3/8" | Yes | Female Drive Adapter | 0000000 | 000000000 |



Accuracy | Mounting Holes | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Square Drive Size | Torque Range | Graduations | Torque-Measuring Direction | Clockwise | Counterclockwise | For Tool Type | Ht. | Wd. | Dp. | Mounting Fasteners Included | No. of | Dia. | Includes | Each | |
With Calibration Certificate with Test Data Traceable to NIST Certificate of Calibration | |||||||||||||||
ft.-lbs., Nm | |||||||||||||||
3/4" | 60 to 600 ft.-lbs. 81 to 813 Nm | 1 ft.-lbs. 1 Nm | Clockwise and Counterclockwise | ±0.5% | ±0.5% | Hand Tools Only | 2 1/2" | 4 1/2" | 14 1/2" | No | 6 | 5/16" | Carrying Case, Female Drive Adapter | 0000000 | 000000000 |

Mounting Holes | ||||||||
---|---|---|---|---|---|---|---|---|
Material | Wd. | Ht. | Dp. | Mounting Fasteners Included | No. Of | Dia. | Each | |
Steel | 4 1/2" | 2 1/2" | 8 3/4" | No | 6 | 5/16" | 0000000 | 0000000 |
Data-Recording Torque Gauges
Wrench-attachable sensors fit between your wrench and socket. Use with hand tools only.



Accuracy | |||||||
---|---|---|---|---|---|---|---|
Square Drive Size (Gender) | Torque Range | Torque-Measuring Direction | Clockwise | Counterclockwise | Cord Lg., ft. | Each | |
in.-oz., in.-lbs., ft.-lbs., Nm, cNm, m-kg, cm-kg | |||||||
3/4" (Female) × 3/4" (Male) | 720 to 7,200 in.-lbs. 60 to 600 ft.-lbs. 81.3 to 813 Nm 8,135 to 81,350 cNm 8.3 to 83 m-kg 830 to 8,295 cm-kg | Clockwise and Counterclockwise | ±1% | ±1% | 8 | 0000000 | 0000000 |