1.1 With the arrival of the global marketplace, it is imperative for U.S. industry to extend its use of the modern metric system (known as the International System of Units, SI) and for U.S.citizens to gain a working knowledge of SI. IEEE/ASTM SI-10 helps you understand and apply SI, which is intended as a basis for the worldwide standardization of measurement units. This 66-page document is the unified American National Standard (ANSI approved) for use of SI. Developed from the previous SI standards of ASTM and IEEE, it conforms in substance to the latest international documents. IEEE/ASTM SI-10 Provides: New material that clearly defines and comments on SI quantities and units used to describe such properties as mass, force, weight, temperature, pressure, angle, moment of inertia, kinetic energy, and work *Descriptions of the classes of measurement units and their prefixes *Section on style and usage *Clear guidance on writing SI symbols correctly *Information on determining appropriate precision in conversions. Features numerous easy-to-understand tables on: base SI units; derived SI units with special names and symbols; common derived SI units without special names or symbols; SI prefixes; and examples of units and names that are not to be used. The appendix includes extensive tables of conversion factors from other units. The factors in these popular tables, expanded from earlier versions, are presented both alphabetically and by classes of measurement, such as units of length, heat, electricity and magnetism, and light.