Matt said, He has a volt meter and never told us about how many 1a2 key systems that he has worked on.

Hey, Matt. The next time I need a volt ohm meter to work on 1a2 I will call you to waste my time.

A but set is a meter without a digital or analog meter such as a simpson meter.

If you spent years listening to electricity/capacity you don't need a meter.

It's kind of looking at it with a scope. The only difference is that your ears become your eye's.