The Fuelhawk is clear lightweight and unbreakable. It's easy to use and gives an instant readout in gallons usable. No more guessing. These handy devices offer the answers to these very important questions:
How many gallons of usable fuel are still in the tank?
How much fuel can be added without going over gross weight?
Are the aircraft fuel gauges working and accurate?
Been using this guy for several years now on my warbird. Have found it well-designed and durable, and Im about to get a second one for backup. When you stick your tanks before departure, it really doesnt matter how well the gauges work!