In the 1960s, this absurdly large camera was used to make masks for integrated circuits. The layers of the integrated circuit were drawn at large scale and then optically shrunk to make the glass masks that were used in manufacturing.
@kenshirriff That's not even surprisingly large to anyone who has ever worked in prepress reprographics.
When the company I worked for dismantled its photostat cameras for junk in the early-mid 1990s, I liberated the gigantic apochromatic lens of the 24 x 36" (film size) camera that took up most of a room.
