Ever wanted to precisely size an image, e.g. a scale drawing? Then Eneroth Image Size is for you. Just enter a scale and a resolution, e.g. what the scanned used to scan a physical drawing is set to, and the Image Size extension sizes the image for you.
@TheOnlyAaron, maybe this is useful for your live drawing? Depends on where you get the drawings from and if you know the exact DPI I guess.
I will check that out!!