FIELD: mechanisms.
SUBSTANCE: positioning device (1) between bridge (2) and plate (3). Said plate (3) includes: for centering said bridge (2), female arrangement (4) with faces (5) receiving cylindrical smooth centering pin (6), fixed to said bridge (2) and abutting on said faces, -or smooth femal arrangement (40) for arrangement of faceted centering pin (60) with surfaces (50), for aligning said bridge (2) on said plate (3), alignment housing (8) with parallel faces (9, 10), aligned on said female arrangement (4; 40) for receiving alignment pin (11), fixed to said bridge (2). Invention relates to collet (15) arranged to be fixed to a plate and including said smooth female centering arrangement (4; 40). Invention relates to clocks, including device (1) or collet (15) of said type.
EFFECT: invention also relates to a method of assembling said bridge (2) on said plate (3) by means of said device (1).
20 cl, 17 dwg
