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        World Metrology Day - 150 years since the Metre Convention
        World Metrology Day - 150 years since the Metre Convention

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        World Metrology Day - 150 years since the Metre Convention

        20 May 2025


        The Metric Convention was signed in Paris on May 20, 1875. Portugal was one of the 17 signatories that established the foundations for the creation of a universal system that led to the International System of Units (SI). 


        Today marks the 150th anniversary of this fundamental day for modern science, industry, commerce, and society. 

        This celebration is an opportunity to recognize the importance of Metrology in building a more reliable and sustainable world. 


        LNEC joins the celebration, highlighting the importance of the International System for its mission of research and technological development in the context of Civil Engineering. It serves as an essential tool for experimental research activities and modelling, as well as for testing in various laboratories that support accreditation and certification, forming the pillar of quality and trust in measurements made daily.