That guy certainly went all in, but I'm just not understanding how the mirror on the stick worked...
Guessing he was looking at the photo in the mirror with one eye and the drawing surface with the other. Think occluded eye sight. The trick would be having the mirror compensate for the dramatically different focal lengths in the case of a real object, whereas his photo copying rig had both at pretty much the same distance. Ideally, a semi-transparent reflector making a Pepper's Ghost image apparently at the location of the drawing surface would do the job even better.
