i want to make a pointer to point the user's attention to the upper scale number like the way for the bottom scale.
like in the lower scale
i changed to (xp , y2-size) for the arrow for the bottom
so for example,
12.5 mm = 12 + 0.5 mm
need to understand how you reference the coordinates of 12 in the drawing panel?
chance to explain? ;D
there is an website applet that i am trying to customize to do