How to Check Calibration Accuracy of Torque Wrench - YouTube
Crescent 3/8 in. Micrometer Torque Wrench 50-250 in. per lbs. 6-30 Nm CRTW38 - The Home Depot
GOEHNER's 1/2" Drive Digital Torque Wrench,12.5-250 ft.-lb./17-340 N.m., Electronic Torque Wrench with Buzzer and LED Flash Notification, ±2% CW Torque Accuracy with Certificate of Calibration 1 - - Amazon.com
Best Practices for Torque Wrench Repair
How to calibrate a torque wrench step-by-step | Equipment World