2025 World Metrology Day: ‘Measurements for all times, for all people’
20 May is World Metrology Day, celebrating a century and a half of international collaboration in metrology.
This year marks 150 years since the Metre Convention was signed in Paris in 1875, which later founded the International Bureau of Weights and Measures (BIPM).
This treaty provides the basis for a worldwide coherent measurement system that underpins scientific discovery and innovation, industrial manufacturing and international trade, as well as the improvement of the quality of life and the protection of the global environment.