| 摘要 |
A system for measuring an internal dimension, such as the radius, of a cylindrical cavity over a determined length, particularly in a hollow shaft belonging to a turbomachine. The system includes a measurement module mounted removably on a support that has translational mobility inside and along the axis of the cavity, the module including a measurement component for measuring the dimension and delivering signals corresponding to the measured values and incorporating a recording and storage for recording and storing the values. More particularly, the module includes a mechanical sensor component able to move between a retracted position and an extended position for sensing the internal surface of the cavity.
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