An adjustable holding device for sensors includes a main body, on and opposite of which, a bearing body supporting a sensor is adjustably held by a spherical joint. The spherical joint includes a threaded stud, fastened to the main body, that protrudes through an opening in the bearing body, and to which an opening in a body having a spherical outer surface is screwed. The outer surface is held pivotably in and co-rotatably with, about an axis coaxial with the threaded stud, complementarily spherical inner surfaces of two combined half-shells. Through rotation under external force of the combined half-shells, the body having the spherical outer surface can be screwed relative to the threaded stud by displacing the half-shells and the bearing body in the threaded stud direction.