I have to call out a rather curge on a feature in a drawing.  The center point of this dimension is

way out in space.  I thought I had this thing licked when I flipped the side of the edge the arrow

showed up on until I did a full screen view and my drawing was really tiny.

I wanted this dim to be a real dimension.  Short of faking it in and making it an annotation note

does anyone have any suggestions?