Force and torque tools are calibrated in comparison with pre-calibrated reference force measuring equipment and torque analyzers. As with any precision tool, force and torque should be periodically re-calibrated because It is possible that these tools can fall up to 10% out of calibration in one year of use.
In the event if you may have any calibration related query, you may send an email to Calibration@CarlStahl.ae or call us at +971-4-333 3494