Chain-operated shades allow students to control the amount of sunlight coming through the skylight. And the amount of light is super important for the blueprint maker. The blueprint maker, copied from Oscar Perrigo’s 1906 Modern Machine Shop Construction, Equipment, and Management, is equipped with photo-sensitive paper mounted in glass frames. The paper can be easily exposed to sunlight by rolling it out in front of the windows. Voila blueprint!
Last but not least, in case of an emergency, Robertson researched Grinnell sprinkler head patents to ensure that the ones installed in the classroom were just right; those above the students’ heads are from an 1892 patent. Now that’s some starchitect-level attention to detail!