This detailed introduction to electrical measurements is an essential resource for anyone interested in the practical aspects of electrical engineering. Patterson's clear explanations and practical examples make the book accessible to both novice and experienced engineers. With extensive use of diagrams and equations, this book is a valuable reference for anyone working in the field of electrical measurement and instrumentation. 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.