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Metrology

The metal cylinder (left) was the primary standard for the Kilogram, and a copy of it (right). Both made by the International Bureau of Weights and Measures.

Metrology is the study of Measurements. It starts a common understanding of units for human uses.[1][2] Modern metrology goes back to the French Revolution's need to replace the old units with natural new ones, this led to the creation of the metric system. As the metric system was adopted by other countries, a new foundation was made called Bureau International des Poids et Mesures (BIPM). This foundation evolved into the International System of Units (SI) from a resolution that was made.[3]

There are 3 basic activities of Metrology, these are:[4][5]

  • The set standards of units.
  • The use of these units in practice.
  • Traced measurements made in practice to the standards.

These activities overlap, making the 3 sub-fields of Metrology:

  • Applied Metrology, the use of it in real life.
  • Scientific Metrology, the making of units.
  • Legal Metrology, the law and use of the units in law.
  1. ↑ "What is metrology? Celebration of the signing of the Metre Convention, World Metrology Day 2004". BIPM. 2004. Archived from the original on 2011-09-27. Retrieved 2018-02-21.
  2. ↑ Collège français de métrologie [French College of Metrology] (2006). Placko, Dominique (ed.). Metrology in Industry – The Key for Quality (PDF). ISTE. ISBN 978-1-905209-51-4. Archived (PDF) from the original on 2012-10-23.
  3. ↑ "Resolution 12 of the 11th CGPM (1960)". Bureau International des Poids et Mesures. Archived from the original on 14 May 2013. Retrieved 28 February 2017.
  4. ↑ Czichos, Horst; Smith, Leslie, eds. (2011). Springer Handbook of Metrology and Testing (2nd ed.). Springer. 1.2.2 Categories of Metrology. ISBN 978-3-642-16640-2. Archived from the original on 2013-07-01.
  5. ↑ Collège français de métrologie [French College of Metrology] (2006). Placko, Dominique (ed.). Metrology in Industry – The Key for Quality (PDF). International Society for Technology in Education (ISTE). 2.4.1 Scope of legal metrology. ISBN 978-1-905209-51-4. Archived (PDF) from the original on 2012-10-23. ... any application of metrology may fall under the scope of legal metrology if regulations are applicable to all measuring methods and instruments, and in particular if quality control is supervised by the state.
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