For many years when I've imported an image and needed to change its scale to make the length of a line on the image to a specific length, I added a line on the image to a desired length, grouped the line with the image, edited the group by tracing the added line with the Tape Measure Tool, entered the length I wanted it to be, hit return and a dialog box would pop up asking if I wanted to change the scale of the whole image. If I selected "Yes", then the whole image would be scaled to make the length the specified amount and, therefore, all the rest of the dimensions would also be correct.
I had an occasion to do that yesterday and that process doesn't work anymore.
Can anyone tell me how I can do it with SU2017?
i7-4930K 3.4Ghz, 2x GTX780 6GB, 32GB DDR3-1600 ECC, OCZ Vertex 4 500GB, WD Black 3TB, 32TB NAS, 4x 27" Monitors, SpaceMouse Pro, X-keys XK-60