Bests & Worsts Reviews from Amazon

July 18 2018 Follow up: EPAuto sent me an unsolicited free replacement wrench which I received and evaluated yesterday using the same equipment as before. I evaluated the replacement wrench at 7 torque settings across the entire 20-200 in-lb. range spaced at 30 in-lb. I’m happy to have found that all measured points complied with the +/-4% specified accuracy with more than half of the points measuring +/- 2.3% or better. I’m very happy with this resolution! Original Review: I’m disappointed with the poor accuracy. I bought this wrench and used an electronic torque adapter to check its accuracy directly. I first checked the accuracy of the torque adapter using a breaker bar and hanging weights at a measured distance from the fitting with the breaker bar horizontal and level. The weight of the breaker bar handle at the measured distance is also summed in with the hanging weights and torque at the adapter is calculated. The calculated torque agreed with the torque displayed by the torque adapter to within 0.6 % or less at 30 and 141 in-lbs. I then used the validated torque adapter to measure the Epauto wrench and a competing 20-200 in-lb model from the OEM company sold by Auto Zone. I measured both wrenches at 4 different torque points from 23.5 to 120 in-lb. The errors for the Epauto wrench ranged from 7.0% to 32.8%. None of the 4 points complied with 4% spec and 3 of the 4 points were in excess of 11% error. The OEM model had errors that ranged from 1.2% to 4.7% with 3 of the 4 points being less than 2% error. I returned the Epauto wrench because the errors were far in excess of the specified limit. The return was easy and convenient.