This one-of-a-kind book provides detailed information on the metric system, its origin, history, and how the base and derived units were established. The book has four chapters (Measurement Systems, the International System of Units, Metrication in the United States, and United States Metric Association), appendices, an afterword, and references. The book is principally aimed at educating students in the United States, but it will also be of interest to anyone who enjoys the popular sciences. Features History of the English, Metric, and International Systems of units Interesting facts regarding all 29 units of the International System Biographies of 19 scientists and inventors after whom the metric units are named History and timeline of definition of seven base units of the International System History and timeline of definition of 22 derived units of the International System