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Everything about the event celebrated in more than 80 countries


World Metrology Day, celebrated on May 20 each year, is observed to highlight the need for precise units of measurement and the contribution of metrologists, organizations and institutes to the scientific study of metrology.

The annual event is observed in over 80 countries to celebrate the necessity and impact of measurement in our daily lives.

Metrology is the scientific study of measurement that is necessary to avoid inaccurate conclusions. Metrologists are committed to developing new techniques, instruments and procedures to ensure greater accuracy in high-speed measurements.

Metrology plays an important role in scientific discovery and innovation in various fields, including industrial manufacturing, commerce and environmental studies.

The theme for World Metrology Day 2022 is “Metrology in the Digital Age”. The theme was chosen due to the growing importance of digital technology to revolutionize the community and to be one of the most exciting trends in society today.

The day is celebrated jointly by the International Bureau of Weights and Measures (BIPM) and the International Organization of Legal Metrology (OIML) as well as other national metrology organizations.

History and significance

World Metrology Day was launched at the 21st General Conference on Weights (CGPM) in October 1999.

This date was chosen because it coincides with the signing of the Meter Convention on May 20, 1875. The Meter Convention is considered the beginning of formal international collaboration in metrology.

Seventeen nations, including the United States, France, Germany, Italy, Russia, Denmark, Sweden, Switzerland, Austria-Hungary, Brazil, Argentina, Peru, Venezuela, Portugal, Belgium, Norway and the former Ottoman Empire, signed the treaty.

The treaty helped bring global uniformity in units of measurement. It also led to the creation of the BIPM, which is an intergovernmental organization with 59 members, and the International Bureau of Weights and Measures.