Measure your gas with this magnetic gas level indicator. All you need do is attach it to your gas cylinder and it will show you how much gas is left in the tank. It is magnetic and will easily stick to your cylinder.
It can safely and accurately measure the gas capacity, using the gas temperature range of -10C - 120C. It is safe and accurate and reusable. it works well with LPG propane, butane or mixed fuel gas cylinders. The magnetic backing makes it easily usable with other cylinders.