Watch how to minimize the error here to illustrate the problem, it is necessary to look at watches why there is error. As we all know, the mechanical clock for sale on the market (including wall clocks, grandfather clock, etc.), the general is in a fixed position. However, due to the friction between the spring characteristics of the structure, material, circle and fatigue, the output torque changes from strong to weak, and the friction generated clockwork and gear in conveying torque will affect the accuracy of the clocks go. Climate, local environment and location also affect the normal operation of the clockwork pendulum clock. Are quartz, to overcome the weakness of the mechanical clock, the use of high-frequency vibration of the quartz crystal is extremely stable as the reference time, by the frequency dividing circuit frequency-dividing into once per second, and then through the micro-stepping motor or scan drive gear , pointer, indicating the time, even so, due to the use of quartz crystal interference affected by temperature changes, will also appear error, the general daily speed for 15 seconds. This is allowed. In order to reduce the error, first placed watches local temperature must be appropriate, not too high and too low. Secondly, watches try not to move or less automatically, to avoid large vibration. The unstirred not should gently. Third, the timing of the full winding.