Gas gauge calibration unit

Good thought on sender. Heck I have an old decade box and other resistors, so no need for sender, just gauge. I guess taking care of two 4 year olds has corrupted my mind. Been doing it most of a week. Been way too cold to get them outside.

I will try to get a better schematic view. I used standard export to png format at 150, and 300 dip with no improvement. I typically use .pdf, not sure how to post that.

I only have about an hour in the work so far. I may find time Saturday.