Using a Torque Wrench

Proper Size and Range of Torque Wrenches

Selecting the proper size and range of a torque wrench is important in obtaining accurate results.

There are several considerations to be taken in selecting a torque wrench for particular applications.

A good rule of thumb is to select a torque wrench having adequate capacity so that your working range is within the mid two quarters of the scale.

For example, if you choose a 600 inch-pound capacity torque wrench, any application within 150 and 540 inch-pounds is the best working range.

Under normal conditions this would give you the most accuracy and the scale would be graduated in fine calibration markings that would allow you the use it and maintain accuracy within the guaranteed tolerance.'

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