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The World Metrology Days 2025 will be particularly special, as they will celebrate 150 years of the Metre Convention with landmark events at UNESCO Headquarters and the Versailles Palais des Congres, bringing together government representatives, leading scientists, industry experts, students, and the public to pay tribute to this long-standing international collaboration.

“Measurements for all times, for all people”, emphasising the essential role metrology plays in driving progress and innovation, ensuring fair trade, advancing scientific discovery and addressing global challenges.