This guide will teach you how to use a torque wrench, check its accuracy calibration, and keep it in shipshape with minimal maintenance.

Keep your torque wrench clean and lubricated, and always return the scale to zero after every use to keep the internal spring from taking a set and letting the calibration drift. Safe Scratch ...

TOM: If you go online and search for “torque wrench calibration,” you’ll find a number of labs that you can send your wrenches to. They’ll recalibrate them and send them back to you.