Metre Convention

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The Metre Convention of May 20, 1875 is a treaty which established three international organizations to oversee the keeping of metric standards. It is written in French, in which it is called the Convention du Mètre. In English it is also called the Treaty of the Meter. It was revised in 1921. In 1960, the system of units it established was renamed the "International System of Units" (Système international d'unités or SI).

The Convention created three main organizations:

Contents

[edit] Signatories

There were originally 17 signatories to the treaty. This number grew to 21 in 1900, 32 in 1950, 44 by 1975, 48 by 1997, and 49 by 2001. As of 31 December 2008 (2008 -12-31)[1], there are 52 signatories (with year of accession in parentheses):

Several other states have associate status:

Note
  1. ^ a b c d e f g h i j k Through CARICOM

[edit] See also

ISO 8601 defines 1875 as the year the convention was signed, by way of a reference date.

[edit] References

  1. ^ "Member States and Associates". Bureau International des Poids et Mesures. 2008-12-31. http://www.bipm.org/en/convention/member_states/. Retrieved 2009-04-23. 

[edit] External links