well, it your photo was taken pretty square to the camera and you have reference dimensions for the majority of the frame members, my approach would be to import the image into CAD, size the image approximately to full scale of the known dimensions, then create an overlaid drawing on the image and spit you out a pdf of the drawing. if someone has a simpler, faster, or better method, i'll defer to them. offer still stands, though.

n

"It'll destroy you if you try to make it mean anything to anyone but yourself." - Henry Rollins