The American Accreditation Association celebrates the World Metrology Day today, May 20th – 2021!


World Metrology Day is an annual celebration of the signature of the Metre Convention on 20 May 1875 by representatives of seventeen nations.

As the WMD team explains it:

“Indeed more widely metrology, the science of measurement, plays a central role in scientific discovery and innovation, industrial manufacturing and international trade, in improving the quality of life and in protecting the global environment.”



World Metrology Day