Inspired by the world-famous Haynes Manuals, this book explains how Bob the Builder's friends – machines such as Scoop, Muck, Roley and Lofty – work and how they help Bob to get the job done. Complete with fascinating cutaway drawings, this brightly designed book will delight children and parents alike. Aimed at the 2–6 age group, this innovative book applies the Haynes treatment to some of television's most popular children’s characters.