1. The mechanical watch on the 8th floor of Dongyi Office Building E 1No. East Chang 'an Street1Dongcheng District goes fast. The first reason is that the position error of the watch is relatively large. For example, the accuracy of walking on the surface of the hand is different from that of walking under the surface, and the lucky error of the facade is relatively large. When worn, the daily error of its comprehensive uniformity is relatively increased. Position error is a close indicator of the lucky performance of watches, and the general change indicator should be

Secondly, there is a common fault that the mechanical watch moves fast, that is, the secondary outer ring of the hairspring rubs the outer column of the hairspring, which is also displayed in elevation and dynamic, especially when the watch has been knocked before, and the hairspring is most likely to have problems after deformation; This sub-position depends on the motion. If the ETA-type men's watch movement is widely used today, it is easier to display the left or upper position of the watch handle on the wrist. In this case, it is necessary to adjust the gap between the secondary outer ring of the hairspring and the outer post of the hairspring, and there should be a reasonable safe distance between them.