From the article:
The new tome contains the most comprehensive compilation of working drawings and architectural plans that served as the basis for the ships, space ports, planets, buildings and infrastructure against which the Star Wars films played out. With over 500 photographs and illustrations, the book lays out in detail everything from the workings of Tatooine's quirky farming machinery or the robotic constitution of R2-D2
The 35-pound book costs $500 and is limited to 5,000 prints.
The above image is copyright Lucasfilm Ltd.