Portable surveying instrument for foundation construction of house foundation

The utility model discloses a portable surveying instrument for foundation construction of a house foundation, which comprises a shell, an exploration rod and a connecting mechanism, the exploration rod is fixedly connected to the bottom of the shell through the connecting mechanism, and the connecting mechanism is arranged on the surface of the shell; the connecting mechanism comprises a threaded connecting ring fixedly connected to the bottom of the shell, connecting threads are fixedly connected to the surface of the exploration rod, the exploration rod is connected to the interior of the threaded connecting ring through the connecting threads, and a telescopic sleeve is fixedly connected to one side of the shell. Through the arrangement of the connecting mechanism, the clamping ring can be driven to be clamped in the clamping groove in the surface of the exploration rod according to the principle that like poles of magnetic force repel, so that the exploration rod can be connected to one side of the shell