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  • I checked three torque wrenches at work recently. The VAR analog one was over 10% out, the 2 Topeak digital ones were spot on. This was using the ‘clamp the head in a vise and add mass’ method. I have no idea how old or well used they are.

  • That method has been explained to me, but having access to digital calibration stuff that are 1 per cent, is how I found my no idea how old britool stuff was out. But cheap Halfords ones and Lidl ones seem fine within 4 percent.

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