Improved counter device (1) having a hollow casing (2) on the inside of which a mechanical type of numerator assembly (3) is housed with an activation device for the numerator assembly (3), and wherein said activation device has a rod (4) that is axially moveable in a straight line having a protrusion that is perpendicular to the rod (4) coupled in a elongated hole (7) located in a moving element (6) jointed in a fixed point that can move at an angle; said moveable element (6) being coupled at one end to a toothed wheel (8) connected to the hub of the numerator assembly (3) itself, in a such way that when the rod (4) moves, when receives a impulsion, to record a numeric count brought about by the slide of the protrusion along the mentioned elongated hole (7) in turn bringing about the angular sliding of the moveable element (6) that activates the toothed wheel of the assembly (3).