Never run out of propane again. Propane meter is easy to connect to your barbecue grill's tanks (no tools needed) and helps prevent waste and early cylinder exchange. Has an emergency flow controller and fire shut off for added safety. Great for use with boats, and RVs. Glow in the dark gas level indicator for grilling after dark. Constructed of plastic and brass. 3 3/4"L x 2"W x 2 1/4"H.