Mechanical Counter is used to record the accumulative times of the mechanical reciprocating movement. It has no reset, when the counting time reach to 99999, re-counting can start from 00000 into another circulation. When the arm of counter is pulled , the driving mechanism connected to the arm will make the counter carry out addition counting. It is mainly applied in the high-voltage switch, and it can also be used in the testing equipment, printing equipment, etc.