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How to use a torque wrench
Purchase a torque wrench that you are sure is calibrated.
Purchase one directly from an auto parts store or a supplier. If you purchase a used torque wrench, take it to be recalibrated at an auto parts store.
There are four types of torque wrenches: beam, click adjustable, dial gauge and digital electronic. The main differences between these types are how they are read and how easily they can be adjusted.