| 摘要 |
The knurled screw (3) is exchangeable, its position is fixed with the aid of a lock-nut (4). Its lower end (5) can be produced in various diameters and profiles (flat, concave or pointed) so as to offer the greatest bearing surface to the push-button to be driven in. The opposite jaw (2) has a spherical cap-shaped surface (7) bearing on the interior face of the watch case and comprises the slot (6) for the passage of the lower part of the push-buttons. The stocky knurled setting-screw (8) limits the closure of the pliers, allowing controlled driving in of the push-buttons. <IMAGE>
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