Abstract: A measurement system comprising a sensor and a controller configured to communicate with the sensor, the controller comprising a display. The sensor comprises at least two measurement assemblies and at least one processing circuit connected to one or more sensing elements each measuring a current value of the same parameter. Each processing circuit emits to the controller a measurement signal as a function of the current value measured by the one or more sensing elements and of a stored reference value. The controller is configured: i) to transmit the reference value to each processing circuit that stores it if the reference value is equal to within a margin of the measured current value, and ii) to receive the measurement signals and display respective symbols on the display, the symbols being at least dissimilar or displayed alternately.

Abstract: A nut is prevented from turning during screwing by a body attached to one of the parts to be tightened by rivets. The body prevents the nut from rotating via a ring coupled without clearance with the nut and coupled with radial clearance to the body, in order to allow the nut to self-position itself along the axis imposed on the screw by the bores traversed by the screw. The nut can thus be a standard nut or a floating cage nut. Application to the retaining of nuts that are inaccessible and/or require a high level of security against unintentional unscrewing.

Abstract: A nut is prevented from turning during screwing by a body attached to one of the parts to be tightened by rivets. The body prevents the nut from rotating via a ring coupled without clearance with the nut and coupled with radial clearance to the body, in order to allow the nut to self-position itself along the axis imposed on the screw by the bores traversed by the screw. The nut can thus be a standard nut or a floating cage nut. Application to the retaining of nuts that are inaccessible and/or require a high level of security against unintentional unscrewing.