What do I have in mind?

What is it that I want in this layout? Well, it will be a layout that features two scales; 1:55n3 and 1:87. It will be made switchable during a show, based on the techniques of Iain Rice from England well known from his books and publications in the European and American Press and Hobbymagazines. I "scrabbled" some things on paper. Not very clear but it will give you some idea what I have in mind for this layout:

Upstairs 1:87, downstairs 1:55. I will try to make this afternoon a new drawing that will be better to see. Grtz, Ronald.