Download or read book Collapsible written by Per Mollerup and published by Chronicle Books. This book was released on 2001-11 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: Collapsibles are objects that fold out for use and then fold back in again to save space. They include anything from sofabeds to Swiss army knives. Per Mollerup identifies 12 essential principles of collapsibility and looks at examples of each.