Calibrador para fixação de parafuso.

摘要

The gauge has a sliding ring (49) comprising an axial length and slidingly mounted on an intermediate smooth portion (39) with graduations (47) indicating grips of a screw. The length of the ring and distribution of the graduations are provided in such a manner that one of the graduations indicated by the ring represents a distance separating a thread (43) of a nut-cage or nut (23) from an external surface of an exterior plate (13) that is appositively located on the nut-cage or nut when a rod (37) is screwed and abutted in the nut-cage or nut and the ring is fixed on the exterior plate.