Counting Method of events that occurred during a period t and mechanical counters associated events

The invention relates to the field of mechanical meters and more particularly to an event counting process occurring during a time T implemented by a mechanical event counter comprising a first gear Zi Di having teeth and a second wheel toothed Dj possessing Zj each having at least one radial coordinate and the occurrence of an event producing the rotation of each of these two wheels by an angle corresponding to the tooth pitch, the method comprising the steps of: - counting, for each wheel, at the end of the duration T, the difference in number of teeth between its initial position and its final position at the end of the period T, - calculating the number of occurrences N as a function of the difference between zi and zj values ​​and as a function of Zi and / or Zj.