Here is how to strip, lubricate and recalibrate your torque wrench using stuff that you may already have around your home or garage. So in others words can be FREE! And of course DIY.
As accurate as your accuracy of weighing weighs.

A bit long but then it does cover the complete dismantling and rebuild of a typical torque wrench, followed by torque calibration,with an accurate torque measuring / torque setup technique.

My own torque wrench was so far out, about 20 lbft low, that it contributed to my loose wheels nuts! So essential to get the right torque. All fixed and correctly calibrated now.

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