watches unpressurized

"Stefan" wrote in message
...
Gig 601XL Builder schrieb:

Dive watches are designed to keep water out not to keep air in.

Professional dive watches have an air valve.

Add the word SOME or maybe even MOST and I'll agree. But it doesn't change
the keep air in statement I made. As a matter of fact it means they are
specifically made to let air out.

Gig 601XL Builder schrieb:

As a matter of fact it means they are
specifically made to let air out.

Of course, this was my point.

Gig 601XL Builder wrote:
As a matter of fact it means they are
specifically made to let air out.




Well, specifically, they are made to let helium out.

Watches off, has been standard for as long as I can remember.

If you did open the helium valve on the watch, I am not so sure it would
keep up with the rapid decompression portion of the profile, assuming
you had that. It is very very very small.

Gig 601XL Builder writes:

Add the word SOME or maybe even MOST and I'll agree. But it doesn't change
the keep air in statement I made. As a matter of fact it means they are
specifically made to let air out.

That's what you'd want them to do at FL250.

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