Dimensional measurements

Measurements of long distances
Measurements of long distances

The facility for long distance measurements is located in a corridor of the gallery devoted to dimensional metrology.

The structure consists in a 28 m long rail fixed to a series of pillars which rest directly on the ground released from the vibrations of floor and wall.

The measuring system is based on a heterodyne interferometer, whose mobile arm consists of a hollow retro-reflector mounted on a structure that can run along the rail, so-called "carriage".

Last modified: 05/25/2017 - 15:06