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 Those tiny little employees must have been really useful in the early days of microelectronics.
@marshray @kenshirriff they are still useful, we've just made great strides in miniaturization