I aquired a Durst ACS R11a Roll Paper Transport box, from a local studio that was basically throwing it out. I took it to save it from the skip, but I don't think I'm ever going to use it, and it's too big for me to keep it around.
It's full of paper - partially fogged (cause the door fell open when I was moving it!), but the centre of the roll is almost certainly still good.
As far as I know you load it with a roll of (normally colour) paper, and it automatically advances the roll by the right amount as you make multiple exposures. There are masks for a range of print sizes. I believe it was working when I got it (the guy would have said), and I haven't touched it since, so it should be fine, but as it really needs to be operated in complete darkness I haven't quite figured out how to operate it. I really haven't much of a clue.
It's pretty heavy, so you'll need to collect it, but if anyone wants it, it's in Bournemouth, Dorset, UK... PM me, come and get it, and it's yours! I'd really like someone to get some use out of it.
Ian