Coleman Digital Fuel Gauge. Indicates the amount of fuel remaining in portable propane tanks used with tabletop grills, portable heaters, lanterns, mosquito foggers and other propane-powered appliances. Pocket-sized device. Designed with user-friendly functionality, the fuel gauge features an easy-to-read, digital LED display to indicate the amount of fuel remaining in your cylinder. It operates on two CR2032 batteries, included. Compatible with any non-refillable fuel cylinder with CGA600 connection, including 16 oz. Coleman Propane Camping Gas, 14 oz. Bernzomatic Propane fuel, 16 oz. Bernzomatic Propane Camping Gas and 14 oz. Bernzomatic MAP-Pro fuel.