No arguement from me. It just seems that a fuel gauge is not as important
as the attitude indicator yet the attitude indicator is not required.
Though fuel is a major part of keeping you in the air as opposed to in the
ground.

Interesting, but I suppose logically the fuel itself is more important
than the gauge, just as the pilot is more important than altitude
indicator?

I mean, if you know how much fuel you have, and how long it will keep
you in the air, could you gauge it by time? Also if flying in good
visiblity could you fly without an altitude indicator?

Thanks