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The first key comparison

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The first key comparison

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  • Author: Michael Matus
As the national metrology institute of Austria the BEV (Bundesamt für Eich- und Vermessungswesen) maintains the national standards for the realization of the legal units of measurement and ensures their international equivalence and recognition. Thus it is at the top of the national metrology system. The unit relevant for dimensional metrology is the meter. This unit was defined 1983 by the CGPM (Conférence Générale des Poids et Mesures) in a future-proof way by fixing the numerical value of a fundamental physical constant, the speed of light in vacuum.

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