Thx. Rich.. i use to linear.. its value X= 0.03 Y= 0.004. to random because im ebored change chgang e.. example... i draw 100 dimension before use to backlash x=0.01 y=0.001 but result is 100.4-100.4 100.4 100.7 totally size. an then when i draw big dimensiın circle... all my settings failed.... reall i dont know.. why like that..