哥伦比亚采购需求：GWM-60 数字扭矩扳手，3/8 英寸扭矩扳手

I'm reaching out regarding a digital torque wrench I purchased a couple of months ago. I've used it a few times, but recently noticed that it's not giving the correct torque readings. For instance, when I need to apply 10Nm, the wrench seems to indicate a lower value. This raises some concerns about its accuracy, and I want to ensure that I'm using it correctly. Could you provide guidance on how to calibrate the wrench? Do you have any tutorials or resources available that could help me with the calibration process? Looking forward to your assistance on this matter. Thank you!