The scanner idea sounds good Phil but I take it you`d need to take multiple scans as the watch comes apart to show an order - as you mentioned.
Maybe it is a bit sad, but I always take a video when I do a dismantle of anything and on a good number of occasions now I`ve had reason to refer back to them and often my bumbling commentary has helped a little which is why I also speak as well. I was quite chuffed with this one and especially the bumper mechanism which is why I shortened it down.
The engineering is incredible, without sticking the calipers on them, a couple of the screws were less than 0.5mm in diameter and not much longer but like you said, with a lovely blued finish. Incredible stuff.