Machines: A Moving Book with Gears, Levers and Pulleys

by Tim Reeve, Robert Andrew

Working, pop-up diagrams of a windpump, crane, helicopter, digger and beam engine, along with clear text, extensively illustrated with line drawings, explains levers, pulleys, gears, wheels and axles and many more mechanical principles. For ages 6 and above.

24 pages, Hardcover

First published December 31, 1992