weight at handle center with handle horizontal on socket on bolt in vise and adjust wrench to just click at that setting. Can do with several different weights then torque (ft-lbs) = weight (lbs) x distance ft). Most click wrenches are least accurate at the lower and upper ends of their range. What is the torque range of the wrench you are using? I assume it is 1/2" drive wrench. I calibrated all click wrenches I have and note +/- that need to be used for settings in wrench range. When storing the wrench release the setting to the lowest value in the wrench range (removes load on internal spring).
19:14:39 02/22/21
