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NIST Office of Weights and Measures Launches New SP 2200 Legal Metrology Publication Series

Graphic image with scale in front and person typing on a laptop in the background. Text on image reads: NIST Office of Weights and Measures, NIST SP 2200 Legal Metrology Publication Series.
NIST SP 2200 Legal Metrology Publication Series

In partnership with the NIST research library, the Office of Weights and Measures (OWM) has launched a new NIST Special Publication Series, SP 2200: Legal Metrology.

The publications in the SP 2200 series provide information on the status and development of U.S. and international legal metrology documentary standards; SI usage, facilitation, and best practices; and technical guidance and training as provided by OWM. In general, these legal metrology standards and services describe the regulatory practices of measurements and measuring instruments to achieve uniform application in the sales of commercial products and services. The publications in this subseries also provide additional technical information that is not provided in the NIST Handbook series.

Stay tuned for the following NIST Special Publications forthcoming this fall:

2022 NCWM-NIST National Survey on 20 lb LPG (Propane) Cylinders (NIST SP2200-01)

The National Conference on Weights and Measures (NCWM) in partnership and cooperation with the NIST Office of Weights and Measures (OWM) and the Weights and Measures Divisions of select U.S. states initiated the 2022 National Survey on 20 lb LPG (Propane) Cylinders that represents the current marketplace practice of manufacturing, filling, selling, and exchanging 20 lb LPG cylinders.

2022 NIST Summary of U.S. Legal Metrology Activities (NIST SP2200-02)

This report includes a summary of changes made to NIST Handbooks 44 (2022), 130 (2022) and 133 (2020), and provides an archival record of proposals, associated actions and recommended changes considered and adopted by the NCWM membership with the goal of assisting the weights and measures community in consistently interpreting and implementing the NIST Handbooks and other related documents. Also included are a high-level summarization of technical aspects as an OWM detailed analysis including background information, regional association reporting, and recommendations for items under consideration or for adoption at the NCWM for 2022.

To view the Legal Metrology Publication Series, please visit: and for more information about OWM publications, please visit:

Released September 29, 2022, Updated October 19, 2022