Locate and pinpoint buried valve lids, water meters, curb boxes, manhole covers and other metallic masses. Metal and Valve Locating Simplified! Easy to use fully automatic digitally controlled one button operation Dynamic self-adjustment feature helps avoid false responses Ergonomic design makes it easy to operate Pinpoint underground valves without adjusting controls or buttons Solid State LED display with material composition response Distinguishes between ferrous and non-ferrous metals Folding compact design makes it easy to store!