Modular horological movement

The present invention relates to a timepiece movement allowing the arrangement of the various displays to be varied. The movement according to the invention comprises a first module provided both with a first frame and with at least one first wheel assembly mounted rotatably on the first frame, a second module provided both with a second frame and with at least one second wheel assembly mounted rotatably on the second frame, which first and second wheel assemblies are connected kinematically together, positioning means, and, connected to the first and second frames, means for fixing the modules to each other. The positioning means are positioned concentrically with the axis of rotation of either the first or second wheel assembly and are arranged so as to allow relative positioning of the two modules in a plurality of angular positions with reference to the axis of rotation of the wheel assembly with which the positioning means are concentric. According to the invention, either the first or second module is a going-train module comprising a going train and an escape wheel, and one of the different wheel assemblies of the going train or the escape wheel may form either the first or said second wheel assembly, while the other of said first and second modules is an escapement-supporting module comprising a lever which may form the other of said two wheel assemblies.