| I've found that digital fish scales work really well for testing pulling loads. I've used them to test thrust outputs of jet engines I've built over the years. I've used them in a pinch to check weight of parts and shipping packages. I've also used them to verify my torque wrench. :) Measure off 12" from the center of the wrench drive and mark it. Use a piece of safety wire to wrap around the wrench at the 12" mark and hook the fish scale to it. Mount the torque wrench into a vice. Set your torque on the wrench and then pull. IF you want to get nitty-gritty about it, purchase three different type of fish scales, perform this test, calculate your standard deviation and know to a higher precision what accuracy your torque wrench possesses. Even despite the most anal means of verification, you cannot forget that in order to measure the accuracy of your torque wrench you will rely on the accuracy of the tool or tools used to test your tool...... Most common reason for improper torque when using a torque wrench? Operator error.
Enthusiasts soon understand each other. --W. Irving.
Are you an enthusiast? If you are out to describe the truth, leave elegance to the
tailor.
Albert Einstein
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