1-156-430 - Ann Ronan Picture Library/Heritage-Images

Raising a slab of stone using a block-and-tackle mechanism, 1620. Copperplate engraving of a treadmill powered by men lifting a slab of stone using a block and tackle. Apart from the treadmill (A), other labelled parts of the mechanism are the through tooth and pinion (C,B), and the worm and pinion (E,D.) Illustration from a 1620 German edition of Le diverse et artificiose machine (The various and ingenious machines), by Agostino Ramelli, first published in Paris in 1588.