Sighting rod that engineering survey was used

The utility model discloses a sighting rod that engineering survey was used, including the columniform supporting seat, the top surface center department of supporting seat has seted up the caulking groove, the embedded sighting rod body of rod that is equipped with of caulking groove, install the spirit level on the side of the sighting rod body of rod, be provided with three circumference arraydistribution's articulated seat on the periphery of supporting seat, the articulated a set of support group spare that has is gone up to articulated seat, support group spare includes the telescopic link, the telescopic link includes and articulates seat looks articulated external sleeve rod, external sleeve rod's inside activity is pegged graft and is had the inscription pole, is connected with two the 3rd locking screw on external sleeve rod's the side, and external sleeve rod and inscription pole fasten through the 3rd locking screw, the telescopic link is provided with a locking screw in the side of articulated de