Theatrum machinarium oder, Schau-Platz der Heb-Zeuge ...
Theatrum machinarium is a 1725 German treatise on lifting machines by Jakob Leupold, printed by Christoph Zunkel and held by ETH-Bibliothek, aimed at engineers and mechanics. Its folding copperplate tables show cranes, winches, pulleys, gears, presses and a large wooden hoisting frame, drawn in clean outline with lettered keys and small figures for scale, offering a designer a dense catalogue of early mechanical forms.
