The cardboard tubes should
at the same time also transport the graphic, by acting as a carrier for it. Detailed information could thus be obtained from the large structure.

Cardboard tubes were looked
for that, together with the prints coated onto them and a laminate, fitted exactly into the tubes of the wall construction. A counterpiece, which was fixed in the large construction, ensures that the graphic tubes cannot disappear completely in the wall. A cord within the tubes determines how far one can pull the tubes out of the wall.