Theater of Machines, Volume 3

An engraving depicts a mechanical apparatus, such as a press or grinding machine, housed within a wooden frame. Two men are shown operating the machine: one on the left manipulating a lever or handle, and one on the right operating a vertical lever marked with an "X." The top of the machine features a circular component marked with a "Z" and a rectangular tray marked with a "B." The background is shaded with vertical hatching.