Originally Posted by gphil
J-3 Cubs AKA Piper Cubs fuel gauge was a top with a wire connected to a cork float that rested in the tank. Worked just fine, bounced around a little and had to make sure it was free and not rusted after sitting a long time .
Gauges of the same type were used on OMC marine gas tanks. One of these days I'm going to use one on an in frame tank. You can bend the wire rod to any angle and shorten it if need be. I've salvaged a number of them from the dump, not too sure why, though, since I haven't used one yet. Would be very convenient to just look down at the little glass window and see how the fuel supply is holding up.