I know this is polluting the thread with a digital tester but here's a side by side taste test of ammeters. The Fluke rubbish on the left was purchased less than ten years ago so by comparison it's a spring chicken. It melted in the back of my car in Maputo 3 years after I bought it. The case distorted to the point it was unusable, what you see below is after a repair with a heat gun to get it back to a point where the batteries stayed in place and the clamp ends met in the middle again. Next to it is an analogue ammeter that was purchased 15 years previous to the Fluke and is still passing calibration tests today.
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