On some aircraft, one fuel gauge, called a totalizer, indicates the total amount of fuel remaining in all the fuel tanks. The sight glass is the simplest form of fuel quantity gauge. The indicator is a glass or plastic tube placed on the same level as the tank.
On some aircraft, one fuel gauge, called a totalizer, indicates the total amount of fuel remaining in all the fuel tanks. The sight glass is the simplest form of fuel quantity gauge. The indicator is a glass or plastic tube placed on the same level as the tank.