Construction of highway plotting board

The utility model discloses a construction of highway plotting board, including first panel, second panel and tool holder, be equipped with a plurality of magnet on first panel and the second panel, first panel and second panel edge are equipped with the second cassette, and first panel and second panel and tool holder pass through hinged joint, tool holder left side is equipped with first cassette, and its right side is equipped with first buckle, first cassette and first buckle and tool holder fixed connection, and the tool holder lower part is equipped with the second buckle, and the secondbuckle passes through the screw can be dismantled with the tool holder and be connected, the tool holder bottom is equipped with braces, recovery unit and bracing piece, and strap one end connects recovery unit with tool holder bottom fixed connection, the other end, and recovery unit and tool holder fixed connection, bracing piece establish in the recess of tool holder bottom, and the roating seat is connected to the br