The baseboard sizes were chosen to give the longest layout that I can set up for testing at home, with a frontal viewing side of 6.5m or 21.5 feet. It would have required another 2 feet of length for a true scale model of this prototype, so some compression is required at the south end of Ribblehead station. The width is also compressed at this point to fit Gauber Road in front of the backscene.
The layout is supported on three steel folding table frames. These frames are quite stable and fold up into compact units for transport, and come with adjustable-height feet. The natural height of the tables would give a track height of 830mm, which is a bit too low for ideal viewing in most circumstances and cannot easily be set up at home for testing. When needed, additional wooden support frames are clamped onto the frames adding another 220mm, raising the track height to a more suitable 1050mm. Adjustments for other heights are trivial. I am sufficiently happy with this technique that I will be using this set of tables for all past and future exhibition layouts.
The boards are paired for transport, with four 3mm plywood panels bolted onto all four sides of each pair to make a shipping crate with all the scenery and tracks on the inside. The two crates fit in the back of the station wagon along with the steel bases.