| 摘要 |
PURPOSE:To enhance the water resistance and to disuse a production of various types of cams, by pressing a counter-shaped tool to form a groove having a uniform depth. CONSTITUTION:A counter-shaped part 6 is formed by almost two cone surfaces 7 and 8. The part 6 is pressed to the glass fixing stage part 2 of a watch bezel and then turned. In such way, a bezel 1 with groove 5 is obtained. |
