\"Clipboard to portable drawing with ruler articulated\".Allowing rectilinear traces on the paper sheet specified therein, receiving, along one of the sides (4) of greater length of the drawing board (1), a guide bar (5) parallel.Stuck between upper and lower frames (2), (3), on which...
\"Clipboard to portable drawing with ruler articulated\".Allowing rectilinear traces on the paper sheet specified therein, receiving, along one of the sides (4) of greater length of the drawing board (1), a guide bar (5) parallel.Stuck between upper and lower frames (2), (3), on which...