NF E11-300

Precision angle measuring instruments. General.

La présente norme constitue une introduction à une série de normes relatives aux instruments de mesurage des angles. Après avoir présenté le schéma qui permet de raccorder les instruments de travail aux unités de base et exposé les deux méthodes d'étalonnage utilisées, la présente norme donne une description succincte des principaux instruments de mesuràge des angles. Rappel de la définition de l'unité d'angle plan suivant NF X 02-006 Le radian (rad) est l'angle compris entre deux rayons qui interceptent, sur la circonférence d'un cercle, un arc de longueur égale à celle du rayon.

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