The Professional BBQ gauge™ is an ideal barbeque accessory for every house. There's nothing worse than running out of gas halfway through cooking a BBQ. The Professional BBQ gauge™ solves this problem instantly! There's no other product on the market like it and its so quick and easy to use. Simply attach the BBQ gauge to the gas bottle, lift and look. The barbeque gauge dial will move depending on how much gas is remaining from Empty to Full. It is accurate every time and works with all standard 8.5kg -9kg gas bottles.