I scanned the pattern pieces of a historical corset out of a book, used the scale to determine the length of each piece, then cropped each piece (I love Irfanview), determined what size it printed out at, then determined the % needed to print out at 'full size' (192% as it turned out).
Now, I have to manually add width (about 6-8 inches of same. sigh.) Oh, and add seam allowances, of course.
Could be interesting.