Amazon.com description: Product Description: From bicycles to robots and space stations, mechanical drawing can be done with the use of just 4 elements (metal, glass, rubber, plastic). Once you have learned the element expression techniques, all you need to do next is accurately design the form and you've made a mechanical drawing! In order to meet the expectations of the reader, this book introduces all sorts of ideas to bring out the true potential of mechanical function as a way to create fantastic mechanical drawings with a personal touch.