Quote Originally Posted by Bitsyncmaster View Post
Reversing the signal to work with our gauge would just take an op-amp and some resistors. Or better yet a micro could do everything an cure that minor movement.
THAT'S what I just couldn't remember to ask Sean about at the meet!...

I was looking at a LM107 OpAmp (with a 12V regulator, if needed) and then a 1NA117 Difference Mode Amplifier (Data Sheet Vo=V3-V2 ).
I wanted to measure the units resistance through its range if he still had it.
...Sean?