This book provides a clear and concise introduction to mechanical engineering, with an emphasis on elementary mechanisms. The authors present a systematic approach to the analysis and design of simple machines, such as gears, levers, and linkages, and demonstrate how these can be used to build more complex devices. The book also includes numerous examples and exercises to help readers develop their understanding of the subject. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.