Tired of getting this just because others have had gauge problems but I've never had them. I didn't test anything with high pressure either, my jeep's range is 120-150 and the gauge had no problem maintaining the reading and keeping it static until you cleaned it. Nice case to keep everything together and portable/ easy to store. My only complaint and the reason I deducted 1 star is that there is no easy way to fully tighten the mismatched spark plug hose adapters. The adapter I used on my Jeep stayed in the head on the first cylinder tested and luckily I was still able to mount a head deep enough to get it out. Each adapter has a port at the bottom that you can attach a wrench to, but the end of the hose doesn't, so I pin and hold a metal clamp on the end to tighten the adapter, which I think will break on some point if you will. it's too often. In summary, this is a great kit for the weekend mechanic who doesn't want to bother checking the car's compression a few times here and there.
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