NIST OWM is organized and operates within four (4) main groups/programs:
National Legal Metrology
In practice, OWM works with our customers and stakeholders to design, develop, promote, and deliver: technical specifications and tolerances for weighing and measuring devices; uniform laws and regulations, methods of sale, and test procedures for a wide variety of commodities; training for laboratory metrologists and weights and measures officials; uniformity and harmonization of legal metrology principles (national and international); and usage of the International System of Units (SI or metric system).