When rummaging though her extensive library, Aleksandra Wagner discovered a pattern book of the old city of Prague. Similar to a dressmaker’s pattern book, it is meant to be cut up, very precisely, and assembled into a three-dimensional paper model.
Designed and printed in the early 1970s, in Czechoslovakia, it is remarkable in several ways:
First: in that pre-computer era, all measurements of the actual architecture had to be made by hand—a formidable task in itself.
Second: the patterns of the scale buildings had to be calculated and drawn by hand. In engineering school, these patterns are called developments, and must take into account the actual dimensions of walls, roofs, and all other architectural surfaces, and therefore are not simply orthographic projections of plans and elevations of the buildings.