How To Calibrate A Click Torque Wrench. The common form of this will use a ball detent and a spring, where the spring is preloaded via an adjustable screw head, which is then calibrated in torque units. Since torque is force * distance, we simply do a bit of math and setup a lever and weight.
Your first step is to measure from the center of the torque wrench drive to a point on the handle. But a torque wrench is only useful and effective if it is accurate and calibrated. To calibrate your torque wrench, you will need the following materials:
Check if your torque wrench clicks when it reaches the torque level you calculated in step three.
Modern torque wrenches have a click on a limit feature that makes a click sound when the preset torque limit is reached. We are able to calibrate all types of torque equipment, including wrenches, screwdrivers and multipliers, to manufacturer standards, giving you the confidence to know that your device is generating accurate measurements each and every time you use it. This will be the new ratio distance and you can apply a calibration factor if necessary. But a torque wrench is only useful and effective if it is accurate and calibrated.