The Metre Convention (Convention du Mètre) is the treaty that created the International Bureau of Weights and Measures (BIPM), an intergovernmental organization under the authority of the General Conference on Weights and Measures (CGPM) and the supervision of the International Committee for Weights and Measures (CIPM).
The Convention was signed in Paris on 20 May 1875 by representatives of seventeen nations. As well as founding the BIPM and laying down the way in which the activities of the BIPM should be financed and managed, the Metre Convention established a permanent organizational structure for member governments to act in common accord on all matters relating to units of measurement.
The Convention follows a format used at the turn of the nineteenth century and is based on the understanding of the governance of international organisations at that time. A note on some other examples of international organisations established with the name "Bureau" at that time is available:
Use of the term bureau or office
The Convention, modified slightly in 1921, remains the basis of international agreement on units of measurement.