May 20 is World Metrology Day, commemorating the anniversary of the signing of the Metre Convention in 1875. This treaty provides the basis for a worldwide coherent measurement system that underpins scientific discovery and innovation, industrial manufacturing, and international trade, as well as the improvement of the quality of life and the protection of the global environment.

The theme for World Metrology Day 2020 is ‘Measurements for Global Trade’. This theme was chosen to create awareness of the important role measurement plays in facilitating fair global trade, ensuring products meet standards and regulations, and satisfying customer quality expectations.

The science of measurement

Across the world, national metrology institutes continually advance measurement science by developing and validating new measurement techniques at the necessary level of sophistication. The national metrology institutes participate in measurement comparisons co-ordinated by the Bureau International des Poids et Mesures (BIPM) to ensure the reliability of measurement results worldwide.

The International Organization of Legal Metrology (OIML) develops international recommendations, which aim to align and harmonise requirements worldwide in many fields. The OIML also operates the OIML certification system (OIML-CS) that facilitates international acceptance and global trade of regulated measuring instruments.

Accurate measurement

These international metrology systems provide the necessary assurance and confidence that measurements are accurate, providing a sound basis for global trade today and helping us to prepare for the challenges of tomorrow.

World Metrology Day recognises and celebrates the contribution of all the people who work in intergovernmental and national metrology organisations and institutes throughout the year. – Press release, BIPM/OIML