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| Joined: | Tue Apr 4th, 2006 |
| Location: | Kentucky USA |
| Posts: | 2722 |
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Pax I personally do not swim in any watch that is not 20 ATM. I tend to be more cautious with my watches than most.
Not wanting to get into fluid mechanics, it is so easy to put to much pressure on a watches case system. The pressure tests and rating are achieved by a gradual increase of pressure in stagnant water at room temp. Laboratory results do not indicate real world results. If you hit a pusher on a chrono watch while washing your hands it is a good chance that you just flooded the case or jump into a swimming pool with a 100 meter watch that is not up to 100% spec.
The industry moved that way due to ease of achieving the depth rating and the problem we have had with warranty work that was not the watches or watchmakers fault.