Theater of Machines, Part 3

A detailed seventeenth-century engraving or woodcut depicting a two-story mechanical mill powered by a treadmill.

In the lower foreground, a worker is shown from behind, walking upon a large, inclined, circular treadmill (labeled with the letter A). The treadmill is constructed of wooden planks arranged in a ring, connected by spokes to a central vertical shaft. This shaft appears to drive a large vertical gear wheel located behind the worker.

On the upper floor, the mechanism connects to a milling apparatus. A wooden hopper for grain sits atop a circular millstone housing (labeled with the letter E).

To the right of the machinery stands a gentleman in period attire, including a tall hat, a decorated doublet, trunk hose, and stockings. He leans on a walking stick, observing the process.

A large window in the background provides a view of an outdoor landscape, featuring a bridge over a body of water and distant trees. In the upper right corner of the illustration's frame, the figure "N° 3" is inscribed. The entire scene is enclosed in a simple rectangular border.