Levelling ruler vertical type posture-adjusting tool

The invention discloses a levelling ruler vertical type posture-adjusting tool. A bottom plate is fixedly connected with a vertical plate. A concave surface seat is located above the bottom plate andfixedly connected with the bottom plate. A sliding block is placed above the concave surface seat, and a levelling ruler is vertically placed above the sliding block. A baffle block is fixedly connected to the side face of the concave surface seat, an adjusting screw is installed in a threaded hole corresponding to the baffle block and abuts against the sliding block. Two ends of a spring are inserted into the holes of the vertical plate and the sliding block separately. Two lower cross beams are separately and fixedly connected to the two sides of the lower middle position of the vertical plate. Upper beams are separately and fixedly connected to the two sides of the upper portion of the vertical plate. Two upper screws are separately installed in corresponding threaded holes of the uppercross beams. The levellin