Lifting measurement mechanism of GNSS measurement precision detector

The utility model discloses a lifting measurement mechanism of a GNSS measurement precision detector. The lifting measurement mechanism comprises a base; one end of the first lead screw is rotationally connected to the upper surface of the base through a bearing, and the first lead screw is parallel to the upper surface of the base; the first knob is cylindrical, the diameter of the first knob is larger than that of the first screw rod, the first knob and the first screw rod are coaxial, and the first knob is fixedly connected to the upper end of the first screw rod; the lower end of the vertical scaleplate is fixedly connected to the upper surface of the base, and the vertical scaleplate is parallel to the first lead screw; the GNSS module is connected to the lifting platform, the lifting platform is rectangular, two corners of the lifting platform are respectively provided with a first screw hole and a measuring hole, the first screw hole is matched with the first screw rod, the first screw rod is in thread