Simon Modelling CB&Q and Wabash See my slowly evolving layout on my picturetrail site http://www.picturetrail.com/simontrains and our videos at http://www.youtube.com/user/MrCrispybake?feature=mhum
QUOTE: Originally posted by BR60103 The British do it all a bit differently. They model O scale at 7mm =1' or 1:43. So HO is half of their O. They make OO scale (4mm=1') or 1:76 but run it on 16.5mm track. Almost all the British ready-to-run is in this combination, which may also be called OO/HO. A large number (but small proportion) of 4mm modellers use a widened gauge, either EM (18.2mm) or Scalefour/Protofour at 18.83mm (dead scale). (Equivalent to Proto87 modelling for HO). A few masochists are modelling British HO. There is slightly more support for this than for American OO. [xx(] So the outcome of this is that you can run British OO on HO track. Some of the older equipment will not go through NMRA standard switches, but I expect that everything made in the last 10 years will. British modellers use the same Peco track that is available here as HO.
--David