World Metrology Day raises awareness of the importance of
metrology and has been celebrated every year on the 20th May since
2000. Organised by the BIPM (International Bureau of Weights and Measures) and
the OIML (International Organisation of Legal Metrology), many national
metrology institutes and regional metrology organisations around the globe participate
in World Metrology Day[1];
for example, in 2021, thirty-six countries hosted World Metrology Day events.[2]
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