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Re: Variation of compass
From: Robert Eno
Date: 2002 Oct 2, 15:04 -0400

At the risk of uttering heresy on this forum, most, if not all, GPS
receivers have a built-in program that provides the magnetic variation for
any place on the planet. The drawback to this feature is that is only valid
for a certain epoch which I think is no more than 5 - 10 years.

----- Original Message -----
From: David Weilacher 
To: 
Sent: Wednesday, October 02, 2002 1:06 PM
Subject: Variation of compass

> What sources exist to determine compass variation for your position at
sea?
>
>
>
> Dave Weilacher
> .US Coast Guard licensed captain
> .    #889968
> .ASA certified sailing and celestial
> .    navigation instructor #990800
> .IBM AS400 RPG contract programmer
>
>

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