Agree, do not loosen - just tighten.
First engine job I did, used a torque wrench where you had to read the pointer against the scale. Not very convenient, but not much to go wrong with it.
Currently have two 'click' type wrenches in different ranges and they're very convenient - but I don't trust them and like to check them using the old beam type wrench (still have it). I wouldn't recommend buying a 'click' type wrench from Harbor Freight - savings aren't worth the potential cost of them being grossly wrong.
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