Hi Larry...

we have been using a Brunton 8097 Eclipse... it is accurate to one degree,
so, being very careful, you can actually read as accurate as 1/2 degree.

we use it in sump surveying and have been able to reach BCRA5 accuracy when
down there... it helped a lot in joining two different survey legs and the
error was minimal...

it is a forestry type compass and very very simple to use... the only
setback is that you are supposed to match the two concentric circles - it is
a little bit time demanding, but this is not exactly a problem when
surveying shallow sumps...

it costs about $37,00 plus shipping in Campmor...

cheers!

Danilo


*quero morrer durante o sono como meu avo, e nao gritando como os seus
passageiros...*
----- Original Message -----
From: Larry Hill <larry.hill@di*.co*>
To: <    >
Sent: Quarta-feira, 29 de Setembro de 1999 01:43
Subject: Compasses


> What is the preffered compass for underwater cave surveying and why?
>
> Thanks, Larry
>

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