[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 . 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.