9/13/2017 4:09 PM
We've had really good success and luck with our Dynatel 3373 from 3M. Probably not made anymore for all I know.
My suggestion, and the reason we went with the Dynatel in the first place, is to get one that someone can show you well how to use. After that, they all do the same thing right? I liked being able to ask the dude who recommended the Dynatel a few follow up questions once we got it, now, its all I know.