Proto® Pre-Set Ratcheting Head Torque Wrenches
- Factory set to a pre-determined torque setting, used for a wide variety of different repetitive torquing applications
- Calibrated to +/- 3% in clockwise direction and +/- 6% in counter clockwise direction
- Calibration is accomplished by mechanical loading of each wrench in a horizontal position, and performing a three click test at 20%, 60% and 100% of maximum instrument capacity
- Certification documents traceable to N.I.S.T. (National Institute of Standards and Technology). CERT Version Only
- Manufactured to meet precision/highly accurate applications such as military and aerospace
- Contact Heavy Maintenance Supply 205-384-5284 for more information
