Land area measuring device for constructional engineering

The utility model provides a land area measuring device for constructional engineering, which relates to the technical field of land area measurement and comprises a fixing frame, universal wheels are mounted on the lower surface of the fixing frame, a transmission rod is rotatably connected to the upper surface of the fixing frame, and the transmission rod penetrates through the upper surface of the fixing frame and extends into the fixing frame. The top end of the transmission rod is provided with a turntable, the outer surface of the transmission rod is fixedly provided with a reel, and the inner wall of the reel is provided with a tape. According to the utility model, through the arrangement of the fixing frame, the universal wheels, the transmission rod, the rotating disc, the rolling wheel, the measuring tape, the inserting rod, the connecting seat, the threaded rotating rod, the rotating handle, the limiting rod, the movable plate, the clamping plate and the clamping block, the function of clamping and