Magnetic Stickers To Measure The Gas Level

This product can safely measure the gas capacity, according to the gas temperature. It can be recycled for a long time. Accurately measure the gas safety volume, according to the gas temperature test, including temperatureHeat the water and a variety of hard surfaces. Suitable for bottles, drink, fridge, boiler, tank, room, car, and other temperature measurement. Never run out of gas again. IndicatorMagnetic gas level. Reliable, reusable and accurate.
Place the gas level indicator on a clean area in the bottom half of the cylinder.Turn on the gas and wait 10 minutes before you can read your indicator.In winter, the bar on the left is active, and in summer the bar on the right is active.A colored bar will appear on the card, the position at the top of the bar indicating the remaining amountOf gas, if the color reaches the bottom of the test card, this means that the gas has run out.