In article ,
James Wilkinson Sword wrote:
On Fri, 31 Mar 2017 01:46:03 +0100, Yellow wrote:

They are frost resistant, not frost proof.

Those words are used interchangeably. My watch is "100m water
resistant". It's waterproof.

Oh, really? Are you sure that the m doesn't stand for milliseconds,
and it is the time it can be underwater before it starts to let in
water? Everyone I know of who has had an accident that tested the
waterproofness seriously has found that it wasn't ....


Regards,
Nick Maclaren.