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| Joined: | Thu Mar 29th, 2007 |
| Location: | Washington USA |
| Posts: | 14965 |
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Any of Sinn's oil filled watches can do this. The trick is the noncomresability of fluids. If interior volume of the watch can't be compressed, then equal pressure is exerted outward regardless of the depth. Fish and squid work in the same principle. they generally have no collapsible cavities. since they are almost entirely fluid filled, the pressure of the watter has no effect on them. the only thing keeping them from the lowest depth is food, temperature and the ability to fed off predators.
Yea Sinn did well. Google the specs on the Sinn UX rather impresive. I don't have it in front of me right now and already have 9 windows open looking at something else. LOL :D