How often does your line of wrenches need to be calibrated? We require our wrenches to go through calibration verification once per year. (Approx. 15,000 cycles) By ken@kenwaresolutions.com| 2018-05-30T22:33:36-08:00 May 8th, 2018|Comments Off on How often does your line of wrenches need to be calibrated? Share This Story, Choose Your Platform! FacebookTwitterLinkedinRedditGoogle+PinterestVk About the Author: ken@kenwaresolutions.com