The utility model discloses a dipperstick is used in controllable boundary member pillow distance and installation of braking rail, measure the ruler including the braking rail, the ruler was measured to the braking rail one end is equipped with the pillow placed perpendicularly apart from measuring the ruler, and it is fixed mutually apart from the connecting plates that set up through two slopes between the dipperstick with the pillow that the ruler is measured to the braking rail, and the braking rail is measured the ruler up end and is equipped with the central line, and the braking rail is measured and is equipped with the insulator in the middle part of the ruler up end and splits into two parts with it, and the insulator right side still is equipped with the wire center line of perpendicular to central line. The utility model discloses measure synthetic dipperstick to the pillow apart from measuring with the braking rail to form a measuring platform above the transponder, consequently used this measuring tool can realize the single transponder surveying work that independently accomplishes, improved work efficiency.