The utility model provides a structure is retrencied, not easy -rusting with leak, the installation and maintenance is convenient, and is artifical more noiseless to automatic surveying work than time measuring, the longer dam foundation uplift pressure is than surveying device of life. It includes pressure -measuring pipe and adapter, the adapter is the tee bend structure, and the lower extreme interface of adapter links to each other with the pressure -measuring pipe, and the side interface connection of adapter has and violently manages, and violently the pipe leads to the turn the corner head and is connected with the standpipe, and the standpipe is connected with tap and manometer respectively through a tee bend, the upper end kneck of adapter has the tube cap through threaded connection, is provided with the cable hole on the tube cap with artifical than surveying the hole, the cable hole is with artifical than surveying the hole for taking internal screw thread step hole, the downthehole gasket that all is provided with of step, and there is cable water joint in the cable hole through threaded connection, is equipped with the through wires hole on the cable water joint, the artifical survey hole of comparing has artifically than surveying hole stagnant water pressure mother through threaded connection.