Date:         Tue, 29 Feb 2000 13:39:54 PST
Reply-To:     Mark McCulley <transporter99@HOTMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Mark McCulley <transporter99@HOTMAIL.COM>
Subject:      Re: Precision Navigation compass
Comments: To: dbeierl@IBM.NET
Content-Type: text/plain; format=flowed

Not sure exactly what you mean by "adjust compass deviation". You first
calibrate the compass by putting it in CAL mode and driving in two complete
circles. You can then set the declination according to your location and
display true north (as opposed to magnetic north). I don't know any accuracy
specs but I'm sure this instrument works better than your typical auto
compass. The compass can detect when it's off (because of an adjacent metal
semi, bridge superstructure, etc.) and displays the word "Distortion". The
display shows degrees as well as direction (N, ENE, NE, etc.). The altimeter
shows only elevation, not barometric pressure. For accuracy you must
calibrate it at a known elevation (like all altimeters except GPS).

MM


>From: David Beierl <dbeierl@IBM.NET>
>Looks pretty cool -- how do you adjust the compass deviation and how close
>can you get it (to my mind, +/- 15 degrees is not too bad for an automotive
>compass, but +/- 5 would be really nice)?  How sensitive is the
>altimeter?  How do you set it?  Will it show barometric pressure as well?
>
>david
>David Beierl - Providence, RI
>  http://pws.prserv.net/synergy/Vanagon/
>'84 Westy "Dutiful Passage"
>'85 GL "Poor Relation"

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