[Dominik]

Thanks guys, very interesting to read. And thanks for pointing - yet, again - to the ERA website for help! :-)

Calibrating the fuel tank sensor to instrument is a daunting task. I get to it shortly for a customer car: Jaguar XJ6 instrument (200 Ohm empty - 20 Ohm full) with unknown sensor...
Seems like a standard aftermarket sensor (240-33) could work okay. I still have to make the tank.

30 years later I am tempted to rate a well built car by the accuracy of the fuel gage!