Usage Tips:[POL to QCC1/Type1]The propane tank gas gauge meter converts POL to QCC1/Type1 hoses and regulators, suitable for 5-40lb propane tanks, this propane tank gauge level indicator is suitable for most propane tanks. NOTE: If the temperature is lower than 0Celsius (32Fahrenheit), the meter may be inaccurate. [Color Coded Dial]The color-coded dial of the propane gauge has three levels: gas (green), low gas (yellow), and supplement (red). The fuel level can be read at a glance without having to disassemble the fuel tank, lift or shake the propane tank. [High quality]The propane gauge indicator is made of high-quality brass, heat-resistant, scratch-resistant and corrosion-resistant. It can provide perfect sealing connections for ovens, RVs, and storage tanks, and is durable. NOTE: When installing oven appliances (oven, heater, etc.), make sure that the oven appliances are not leaking. [Easy to install]The propane tank gauge has an appropriate length and can be tightened without additional tools. Comes with a dust cover. After installation, slowly open the valve to use. [Wide application] The propane gas gauge with a dust cover, the propane tank level gauge is perfect for heaters, smokers, camping stoves, tabletop grills, fire pit tables, gas grills, motorhomes and other propane appliances. Please Note: 1. The propane tank meter will not take a reading until the propane tank valve is open and there is air flow through the propane tank meter. 2. If the dial is red, the propane tank is no longer available. This does not mean that it is completely emptied, but there is not enough propane in the tank to pressurize and push it through the hose. 3. For your safety, all propane devices, such as gas grills, lanterns, heaters and stoves are used outdoors. Before using on the propane device, it should be fully tightened on the propane tank side and grill side to prevent leakage. Colour:brass color Material:brass Packa