General description Product can safely and accurately measure gas capacity, showing when you are running low on gas before you run out. It works while using the BBQ, allowing you to save money by utilizing more gas from each cylinder. This reusable tool is compatible with LPG (propane) and butane cylinders. Technical specifications Temperature measurement range: -10 °C to 120 °C Color: black Material: PET Measurement allowed error: +/- 1-3 cm Installation Place your gas level indicator on a clean area on the lower half of the cylinder. Turn on the gas and wait 10 minutes to read your indicator. In winter, the left bar will be active; in summer, the right bar will be active. Usage This magnetic mount allows easy reuse on exchange cylinders. Other information Package Contents: 6 x Magnetic Gas Bottle Tool Note: Light reflection and different displays may cause the color of the item to differ slightly from the real thing.