http://www.awta.com.au/Textiles/Publ...s/pdf/T29B.pdf

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I smile and go off waving
(Amiably) - for that's my way

Baal

"Richard" wrote in message
...
In specs for bivvys they quote a hydrostatic head, for example 3,500mm or
5,000mm. Can someone please explain what this means.

Cheers ....... Richard


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