World Metrology Day 20 May 2018

This year´s theme of the World Metrology Day is "Constat evolution of the International System of Units". The theme was chosen because in November 2018, the General Conference on Weights and Measures (CGPM) is expected to agree one of the most significant changes to the International System of Units (SI) since its inception. The revised SI will be entirely based on constants of nature, and it will eliminate the final link between the SI and definitions based on physical artefacts, such as international Pt-Ir prototype of kilogram.

More information about the World Metrology Day 2018 and the revision of SI is available:

www.worldmetrologyday.org

https://www.bipm.org/en/measurement-units/rev-si/

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