Portable multi -functional drawing tool

The utility model relates to a drawing tool field discloses a portable multi -functional drawing tool, and it is equipped with transprotable parallel rule, set square and corner chi including the draughting board that adopts the light material to make on, still be equipped with many prisms engineer's scale and many prisms engineer's scale adjustment mechanism that can adjust in addition on the parallel rule. The utility model discloses well draughting board adopts high -quality PS material to have good intensity and carries light and handy characteristics, and secondly draughting board has theprinting opacity function, strengthens more service environment's suitability, and parallel rule and corner chi all have many proportions conversion functions simultaneously, utilize worm gear mechanism to rotate the pivot of proportion chi, rotation to corresponding engineer's scale through engineer's scale adjust knob switch, break away from the loaded down with trivial details of traditional triangular proportion and