It continues to be an absolute scandal that after all these years the majority of mainstream light aircraft still have poor fuel indication systems.
Not so the Grumman Yankee. The tanks are the main spar and they have a sight glass right there in the cockpit, so you know exactly how much fuel you have. On the down side though, I wonder what happens if you crash
Well, if you're picking up the aircraft from the pump and you've seen the refueller's signature in the book it might seem somewhat untrusting to climb up and look inside the tank whilst the guy's watching you
I do it all the time, every time, right in front of them. It's not untrusting at all and they don't take it that way either.