National Metrology Institutes
National Institute of Standards and Technology
US national metrology institute that promotes innovation and industrial competitiveness.
Bureau International des Poids et Mesures
International organization establishing worldwide uniformity in measurement standards.
European Association of National Metrology Institutes
Regional metrology organization coordinating European cooperation in measurement science.
National Physical Laboratory
UK's national measurement institute providing measurement standards and calibration services.
Physikalisch-Technische Bundesanstalt
Germany's national metrology institute providing scientific and technical services.
National Metrology Institute of Japan
Japan's national institute for measurement standards and metrology research.
Accreditation Organizations
United Kingdom Accreditation Service
UK's national accreditation body for organizations performing testing, calibration, and certification.
American Association for Laboratory Accreditation
US-based non-profit accreditation body for testing and calibration laboratories.
International Laboratory Accreditation Cooperation
International organization for accreditation bodies operating to ISO/IEC 17011.
Professional Organizations
Measurement Science Conference
Annual conference focused on measurement science, training, and networking for professionals.
NCSL International
Professional organization promoting cooperation among measurement laboratories.
International Society of Automation
Professional society that sets standards for automation and provides certification programs.
Educational Resources
NPL YouTube Channel
Educational videos from the UK's National Physical Laboratory on measurement science.
NIST SI Units Resource
Comprehensive guide to the International System of Units (SI) from NIST.
SI Brochure
The definitive reference on the International System of Units from BIPM.
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