We are proud to present the Fifth Canadian Edition of Interpreting Engineering Drawings. It is clearly the most comprehensive and up-to-date text of its kind. The authors have worked diligently to provide a text that will best prepare students to enter twenty-first century technology-intensive industries. It is also useful to those individuals working in technology-based industries who feel the need to enhance their understanding of key aspects of twenty-first century technology. To that end, the text offers the flexibility needed to provide instruction in as narrow or as broad a customized program of studies as is required or desired. Clearly, it provides the theory and practical application for individuals to develop the intellectual skills needed to communicate technical concepts used throughout the international marketplace.