Water meter magnet is mainly used in water meter. The traditional water meter, the internal structure from the outside can be divided into shell, sleeve, inner core three pieces. Is used to accumulate the total amount of water flowing through the pipeline flow meter. Record the tap water meter, installed in the water pipe, when users turn on the water, the pointer on the table or turn the word wheel to indicate the amount of water passed. Such meters with its simple and inexpensive, long-term use in humid environments without maintenance, and without power, the power outage does not affect the work of the advantages will still be long service.