A setting assembly to adjust components linked to it, in particular to adjust the reticle of a sighting telescope, comprising an adjustment cap system which is rotationally supported on a coupling and which drives said setting assembly, said coupling being designed to transmit adjustment cap system displacements to components that can be connected to the coupling in order to transmit their setting(s) and a first locking element mounted on the coupling being able to engage a second locking element in a way that the position of the adjustment cap system can be fixed in place relative to the coupling. The first locking element is an at least segment-wise externally toothed collar and the second locking element is an at least segment-wise internally toothed locking ring. A resiliently supported detent at the coupling may engage by detent recesses an associated detent ring at the adjustment cap system.