Portable measuring device for building foundation construction

The utility model relates to the technical field of building construction auxiliary equipment, and discloses a portable measuring device for building foundation construction, which comprises a supporting seat and a measuring instrument, a threaded rod is fixedly connected to the outer surface of the bottom of the supporting seat, and a threaded cylinder is in threaded connection to the outer surface of the threaded rod. The outer surfaces of the three first connecting bases are rotationally connected with telescopic columns, and the outer surfaces of the three first lantern rings are rotationally connected with telescopic rods. According to the portable measuring device for building foundation construction, the threaded rod, the threaded cylinder and the telescopic rod are arranged and matched with the telescopic column, so that the problem that existing building construction measuring devices such as a level gauge, a total station and the like generally need a tripod to mount and fix the level gauge or the t