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Dr. S.G. Millard writes:

>as it is not obviously going wrong.  Maybe you all wear a back-up depth
guage and watch ..or
>2 or 3 computers each (?) Any comments ??

I use the Beauchat computers; I actually dive with two, one Aladin Pro and
one Aladin Sport.  They use the same algorithm and should be giving identical
information.  I feel very comfortable with this setup.  They are of such a
size that I can wear them side-by-side on my arm and compare them on every
glance.  

However, due to slight differences in the pressure sensors it is not uncommon
for them to be +/- 1 fsw apart.  This leads to slight differences in
No-deco-time and deco requirements; especially on multiday repetitive dives.
I always follow the most conservative and feel that this, along with the
other saftey buffer procedures that I employ(like Nitrox or O2 decos) gives
me a good saftey margin.

Enjoy,
Tom Topping
tnt@we*.co*

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