OWM leads and manages a series of United States National Work Groups (USNWG) on specific weights and measures technical areas:
Belt-Conveyor Scale Systems
Alternative Test Methods
Further details regarding the individual USNWG Charters and operational guidelines are located within each page. In general, the USNWGs have the following objectives:
The USNWG is a technical working group and not a consensus body. However, the guidance documents, methodologies, and data collection protocols generated through this work may serve as templates for weights and measures jurisdictions and others seeking to validate other test methodologies for use in testing commercial weighing and measuring equipment.
Membership of the USNWG shall consist of individuals relative to the scope of the individual USNWG. For example, membership may be drawn from regulatory and other government agencies (including NIST); the service industry; weighing and/or metering equipment and component manufacturers; manufacturers of field test standards; packaging companies; consumers; standards and/or quality laboratories; and other industries, organizations, and businesses related to commercial weighing and measuring systems, packaged commodities, and other goods and services sold by weight, measure, or count. To the extent possible, membership shall be drawn from these groups and other interested parties. Individuals may represent more than one category (except during the voting process).
NIST OWM operates and manages these USNWGs in accordance with the following authorities under the NIST Organic Act 15 U.S.C. 272(b)(2): to develop, maintain, and retain custody of the national standards of measurement, and provide the means and methods for making measurements consistent with those standards; and 15 U.S.C. 272(c)(4)): cooperate with the States in securing uniformity in weights and measures laws and methods of inspection