Color Change Magnetic Gas Level Indicator never runs out of gas. Features a constant read out that lets you see at a glance when you need to refill. Fits all size cylinders and gives accurate readings in all temperatures.
??Never run out of gas unexpectedly!
??The GLI Gas Level Indicator applies magnetically to LP or butane tanks.
?? Turn on the gas and easy-to-read bars change colors as gas is being used.