A device for measuring the evolution of a crack fixed in removable manner and deep on a wall and a mount corresponding

摘要

The device has a setting stick (2) sliding on a support (3) that has a window (4) for reading measurements indicated on the setting stick through a vernier of the stick, where the setting stick and the support are fixed on a wall on both sides of a crack. Fixing points (6, 7) maintaining the device on the wall corresponds to orifices provided in the support and the setting stick. The support is provided with graduations in millimeters or centimeters. An independent claim is also included for an assembly for measuring the developments of cracks on a wall.