摘要 |
<p>The main links (19, 20) are made in strong thin metal and arehinged together (21, 22). They have holes at each corner through which screws can pass to hold the interchangeable plates (9, 10). The upper plate (9) can be made of precious metal or other decorative material and has a dished hole at each corner for the heads of the screws. The lower plate (10), of metal suitable to be in contact with the skin, has threaded holes at each corner into which the screws are screwed.</p> |