Disclosed is a circular or sector sprinkler, a nozzle arrangement of which generates a jet pattern with a sprinkling range that is adjustable in accordance with the angle of rotation. The sprinkler head of said sprinkler is surrounded by an annular control cam which can be transformed into a non-planar shape by means of adjusting elements. The control cam is formed by a plurality of segments which are to be considered dimensionally stable per se, are sequentially arranged in the peripheral direction, and are connected in joint regions in such a way that the segments can be angularly adjusted relative to one another. The control cam is supported on the housing by adjusting elements in the joint regions.
