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A torque tester is used as a quality control device to test or calibrate torque controlled tools. This includes electronic torque wrenches, click torque wrenches, dial torque wrenches, electric screwdrivers, air screwdrivers, pulse tools, cordless screwdrivers, nutrunners, and torque screwdrivers. Today's advanced torque testers include the ability to measure in clockwise and counter-clockwise directions, and potentially convert to engineering units. They can also have different modes of operation , or include a certificate from a local regulator.
Torque testers measure properties such as torsional strength and stiffness and are used in quality control of various fields including medical devices, metals, and aerospace.