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OWM Products and Services

NIST OWM develops, promotes, and delivers a wide range of legal metrology products and services including U.S. and International documentary standards, technical guidance and test procedures, and numerous in-person training courses, webinars, and e-learning resources.

Publications and Documentary Standards

OWM publishes a wide range of NIST documentary standards, Handbooks, special publications, and internal reports that pertain to areas of legal metrology, laws, regulations, measurement devices, and specifications and tolerances.


e-Learning Resources

OWM has various online and e-learning resources that can be used for training and continuing education, both in a formal setting and through self-study.


Training Courses and Events

OWM provides a variety of in-person and virtual training and encourages our community to participate in this professional development opportunity to build and extend their technical skills.



OWM maintains a quarterly digital newsletter and provides articles of interest to the weights and measures community.


Technical Article Library

OWM provides a library of all technical articles provided in the quarterly newsletters. This includes those from the most current edition to technical articles from past newsletters dating back to 1998.


U.S. National Working Groups

OWM leads and manages a series of United States National Work Groups (USNWG) on a range of weights and measures technical areas.


OWM Contacts System

This Contacts System is managed by NIST OWM as a service to the weights and measures community and the general public for registering for OWM training classes and for requesting, downloading, and/or reviewing a wide variety of weights and measures technical materials and publications.


Created March 10, 2023, Updated June 5, 2024