National Metrology Institutes (NMIs)

National Metrology Institutes (NMIs) are official organizations in each country responsible for establishing and maintaining measurement standards. They ensure measurements—like weight, temperature, and time—are accurate and consistent across industries and scientific research. By developing and certifying precise measurement techniques, NMIs enable trust and reliability in trade, technology, healthcare, and innovation. Their work helps to harmonize measurements nationally and internationally, supporting economic growth and scientific progress. Examples include the National Institute of Standards and Technology (NIST) in the U.S. and the Physikalisch-Technische Bundesanstalt (PTB) in Germany.