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Proto® Fixed Head Micrometer Torque Wrenches in./lbs. Certified

  • Calibrated to +/- 4% 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