| 摘要 |
<p>The device has a simultaneous zero reset device including a lever with two hammers (6, 8) which are applied against respective cams (6b, 8b), when two time counters are reset to zero. Pins (10, 12) guide a lever (4) with the two hammers being secured to the lever and moving in a shaped aperture made in a bridge. A ring e.g. machined metal part or a jewel made of ruby, is mounted to rotate freely about the pin and is inserted between the pin and the shaped aperture in which the pin moves.</p> |
