Advances in methods of gear design and the possibility of predicting the sound pressure level and life time of gearboxes and perfect instrumentation of test stands allows for the production of a new generation of quiet transmission units....

The new Shape Books series brings the ancient world to three-dimensional life and reveals the most interesting topics from some of the world\'s most important empires....

Lift the covers to reveal the thick board pages cut out in the shape of a Medieval castle. The book contains a wealth of information, including; the different types of castles, who lived there and what weapons were used to lay siege to and defend them, all with glorious detailed illustrations. The format ensures that learning is fun!...