Mechanical chronograph to the thousandth of a second.

摘要

The invention relates to a mechanical chronograph comprising a regulating member comprising an axis (2), a balance spring (1) mounted on said axis and arranged to oscillate about an equilibrium position, a plate (4) ) Mounted on said axis (2), the regulating member being sized to oscillate with an oscillation frequency equal to or greater than 500 Hz. Said regulator member comprises a launcher collaborating with the means for decelerating and decelerating the regulating member.