Building Machines: An Interactive Guide to Construction Machines

Explore the giant vehicles found at any construction site - from dump trucks and front loaders to excavators and cranes - then build your very own construction machines!

A must for budding engineers, this unique interactive book contains all you need to assemble nine working models. Just follow the step-by-step instructions for bolting the cogs, rods, and wheels onto the perforated work board - then discover for yourself how each machine works!