provide a common language to measure and evaluate performance, make interoperability of components made by different companies possible, and protect consumers by ensuring safety, durability, and market equity. NIST’s portfolio of services for measurements, standards, and legal metrology provide solutions that ensure measurement traceability, enable quality assurance, and harmonize documentary standards and regulatory practices. The tools, information, and training provided by NIST, and the contributions and results produced by its staff, lead to advancements in research and technological innovation that foster the drivers of the U.S. economy: invention, improvement, and commercialization. NIST provides calibration services to disseminate the primary physical measurement standards for the U.S. for commerce, industry, and research. Calibration services allow customers to achieve the highest quality in their measurement systems, and to provide assurance in their results, by communicating the NIST measurement results for carefully selected instruments and artifacts.