The Laboratoire Commun de Métrologie (LNE-Cnam)

We are a research laboratory from Cnam as well as one of the four designated institute for the french primary metrological references.


LNE-Cnam undertakes development, conservation,improvement and transfer of french metrological references for four of the seven base quantities of the Système International d'Unité (SI).
.Recherche en Longueurs à l'INM, institut national de métrologie. Réfractomètre.


Calibrations realized at LNE-Cnam gives a link to the french tracability chain. Those measurement are carried out according to the requirements of the ISO/CEI 17025 standard.

Etalonnage du mètre à l'INM


LNE-Cnam is an active member or pilot of several international actions carried under the patronage of the CIPM Comité International des Poids et Mesures) or  of EURAMET, The european organism for cooperation in metrology.

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