Fuel Gauge Sending Units compared

RedFish said
as that wire heats up its per inch resistance changes. Plus there is some geometry involved in the arc/bowing of the bimetal.

That actually clears up a lot for me. Thanks!

Dana67Dart said
We got very similar results. I used the tank and 18 gallons of fuel

Awesome work, thanks for sharing! With your method you can see what happens when the fuel level is above the float's maximum height. My method doesn't capture that.