The pin mode is very accurate but the underground worked for about 3 days and now it is far from accurate. In principle we can say that it is broken. If you test it on your arm, the reading shows 12% on bare skin. If you want something that will do the trick, that's fine. If you need professional results time and time again, I'd recommend the GE Protimeter, but it costs four times as much. I had a contractor who stole mine and bought it for the price in an emergency. No regrets, just be aware that I should be more thoughtful about my testing.
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