Abstract

This chapter discusses the function of International Bureau of Weights and Measures (Bureau international des poids et measures (BIPM)). BIPM, with headquarters at Sèvres, a suburb of Paris, was established by the Metric Convention signed in Paris on May 20, 1875, as a permanent institution to carry on research concerning problems of standardizing weights and measures. To attain worldwide unification of physical measurement, the BIPM is charged primarily with the functions of the comparison and verification of the prototypes of the meter and kilogram, the establishment of international standards and of measurement scales of other physical quantities, the custody of the international prototypes, and the periodic comparison of national standards and measuring scales with the international prototypes. Further tasks are the calibration and comparison of geodetic measuring, the determination of fundamental physical constants and the improvement of the international system of units, which is the modern form of the metric system. The BIPM is financed by contributions of the member States in proportion to their national revenues.

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