A while back Volvo Farmer and I shared a batch of amp meters from E-Bay. He introduced me to a neat trick he learned from somewhere or other. The meters were the type that you pass the wire through a cage to measure the DC amps in the wire. The trick was that you could loop the wire a couple or more times to change the scale of the meter to a lower value. The meters were 80 Amps, so for example if you looped a smaller cable through the slot 4 times, it yielded a 20 amp meter. The only thing was that the scale in the back was still for an 80 amp meter.
Anyway, I was looking through the old files and noiced a posting from BT from a year or so ago. It was a visual basic program for generating the meter display backing. Within about 10 minutes I had it figured out and was looking at a nice 20 Amp scale background for the meter. It was a beautiful thing. Rich Hagen
