A completely illustrated guide to poka-yoke for supervisors and shop-floor workers, this book summarizes many of the concepts and main features of poka-yoke. It includes 240 examples, organized according to the broad issue or problem they address, of poka-yoke improvements implemented in Japanese plants. The author pinpoints how poka-yoke applied to specific devices, parts and products, categories of improvement methods, and processes. He provides sample improvement forms readers can use to sketch out their ideas.