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A friend of mine is an engineer and is now involved in the sales aspect of the company. His company makes calibration equipment, with Snap-On being one of his accounts. He checked all of my torque wrenches (3/8 inch lbs, 3/8 foot lbs, and 1/2 inch foot lbs) on one of the calibration meters that he sells to Snap-On. All of my wrenches are click-type and are between five to ten years old. All were within 2-3% of specs. Then he checked my beam-type wrench which I never use anymore and it was off 35%! If you don't drop them or use them as a breaker-bar, they should stay correctly calibrated for some time.
Steve
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'82 911 SC
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