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I have a standard click torque wrench. I was told I should set it to zero when not using it in order to keep the accuracy high. Is this true?

Secondly, I have not been doing this since I purchased the wrench a few years ago, how much of a problem is that?

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up vote 15 down vote accepted

Yes you should store it at zero, it weakens the spring. I would have it checked/calibrated to make sure it is still accurate.

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Every torque wrench I've ever owned has said that in the directions too. Be sure to read the directions that come with tools, some of them do require special care! – Brian Knoblauch Jun 2 '11 at 18:07

My Craftsman torque wrench cannot be put back in the box unless it's at 20%. Granted, the plural (or even singular) of anecdote is not data, but I have always heard 20-25% of the max torque it's rated for.

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