My friend calibrates for a living, he calibrated 3 brand new crapsman and 1 brand new harbor freight torque wrench for me and all the crapsman where out of spec by alot. IF the wrench is set a 50 it would click at 56 set at 60 click at 69. If got worse as it when up. and the HF wrench was only of by 2 lbs at the most at the same setting.