This is both a practical and theoretical guide to the visualization techniques u sed by contemporary product designers, including freehand sketching, digital ren dering, information graphics, and presentation skills. Hundreds of hand-drawn sk etches and computer models have been specially created to demonstrate critical g eometry and show how to develop sketches into finished illustrations. Practical tutorials give guidance in creating simple and complex forms, as well as renderi ng and providing context using scenarios and storyboards. Insightful case studie s of leading designers illustrate the full range of different visualization opti ons available.