This product can safely and accurately measure the gas capacity in your propane or butane cylinder according to the gas temperature test measuring the temperature range of -10 C~ 120 C.
It Will actually show you the level of your gas in your cylinder through the indicator bars before you run out!
Works while you are using your gas cooker
Save money by using more gas from each cylinder
Safe, reliable & accurate
Works on LPG (propane) & butane cylinders
Magnetic backing allows for easy reuse on exchange bottles
Comes with instruction