There are lots of articles and videos on how to figure out your calibration ratio at home.
This [](https://www.doityourself.com/stry/diy-torque-wrench-calibration)**[one](https://www.google.ca/amp/s/m.wikihow.com/Calibrate-a-Torque-Wrench%3famp=1)** is simple.
Oct. 23, 2017, 8:45 p.m. - Andrew Major
There are lots of articles and videos on how to figure out your calibration ratio at home. This [](https://www.doityourself.com/stry/diy-torque-wrench-calibration)**[one](https://www.google.ca/amp/s/m.wikihow.com/Calibrate-a-Torque-Wrench%3famp=1)** is simple.