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 VIDEOS

Towards Better Torque Calibration

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  When rotating your tires, your mechanic might use a torque wrench to apply the right amount of torque -- that is, the force applied to the handle of the wrench to make the bolt turn -- to the fasteners that connect the wheels to your car. For jobs like this, people need to make sure that the amount of torque they are applying is the amount intended. And that requires calibration. NIST is working on a new way to calibrate torque devices that will be simpler and more accurate than traditional techniques. Enter ENTR, short for the Electronic NIST Torque Realizer, which works by responding to a torque applied to this central shaft by producing an opposing torque that can be measured extremely accurately as current. Video credit: Jennifer Lauren Lee/NIST. Animations by Sean Kelley/NIST.

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