Based on Shigeo Shingo's best-selling book Zero Quality Control: Source Inspection and the Poka-Yoke System, this Shopfloor Series book teaches you the basic principles of mistake-proofing. Written in an easily accessible format, you will learn how zero quality control and mistake-proofing devices strive to eliminate errors in manufacturing. Since it is human nature to make mistakes, you don't blame people for errors with ZQC, but instead you find ways to keep errors from becoming defects. With this book, you introduce frontline workers to the basic methodology and important aspects of ZQC, your guide to satisfied customers.