Rotary Reader

From Proceedings of the Athanasius Kircher Society comes this wonder, a rotary desk that allows a person to keep up with multiple books at once. Designed in 1588 by Italian engineer Agostino Ramelli, "with this sort of machine a man can see and read a great quantity of books, without moving his place: besides, it has this fine convenience, which is, of occupying a little space in the place where it is set."