At the end of the 18th century, the French Academy was assigned the task to prepare a metrology system which would be applicable to all, regardless of the time framework. In order to meet this requirement, they designed all the measures on natural phenomena and sources. These endeavours resulted, in 1875, in the signature of the Metre Convention by 17 most developed states of the world.

The Convention defined the prototypes of metre as the unit of length and kilogram as the unit of mass. It established the International Bureau of Weights and Measures (BIPM) and the International Committee of Weights and Measures (CIPM). The Metre Convention finally introduced order in the field of metrology in Europe, and later also in the rest of the world.

CGPM - Slovenia is associated member of General Conference on Weights and Measures (CGPM - General Conference on Weights and Measures)

MRA - mutual recognition agreement