This product can safely and accurately measure the gas capacity, according to the gas temperature test, measuring the temperature range of -10 C~ 120 C.
Will actually show you when you are low on gas, before you run out!
Works while you are using the BBQ
Save money by using more gas from each cylinder
Safe & accurate

Reusable
Works on LPG (propane) & butane cylinders
Magnetic backing allows for easy reuse on exchange bottles
Comes with instruction
Instructions:
1.Place your Gas Level Indicator on a clean area on the lower half of the cylinder.
2.Turn on the gas and wait 10 minutes before you can read your Indicator.
3.In the winter the bar on the left will be active, and in the summer the bar on the right will be active.
Colour:black
Material:pet

Package Contents:
3 x Magnetic Gas Cylinder Tool

Only the above package content, other products are not included.
Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.