Some interesting information. I would add based on a bad experience, that chasing threads with a tap or die should only be done with a quality tool. In my youth, I purchased a cheap tap and die kit from Northern. It was only about 20 bucks and turned out to be real was junk (made in China of questionable who knows what). It actually made threads worse. I had every intention of doing the right thing chasing holes and fasteners, but ended up destroying good threads with this cheap tool. Hence my earlier post about "you get what you pay for".

I didn't realize the "click" type should be backed off between uses, but thinking about it, it makes sense. My 250 ft-lb wrench ine is usually left around 70 ft-lb for lug nuts. I'll probably start backing it off.

Any tips how a home mechanic would go about calibrating his 1/2" drive click type?