As I said Chuck, I was pleasantly surprised that when I mounted that compass
it required no adjustment.  I've had the experience with other small
compasses in automobiles where turning on the lights or the spinning of the
speedometer would throw the compass way off or just driving down the road
the compass would pick up vibrations and spind like a top.  But this one has
been virtually perfect in that location.  I had tried a small flux gate
compass in my '85 Westy at one time and couldn't get it to work, at all.
After installing the Sunnto I went to a large open parking lot (no power
lines above) to swing it and it needed no adjustment.  I'd made sure the
adjusters were set to zero before installing.  I picked that compass because
of the construction and mounting options and because it was top quality.
Also I could get it at cost :)
Someday I'll write up the adventures I and a couple of coworkers had in the
'60s installing and running aircraft gyro compasses in out cars, mine a '62
Plymouth Valiant.  True story and actually got it to work.

On 1/27/07, Chuck Mathis <cmathis@houston.rr.com> wrote:
>
> Loren,
>
> How steady is that small marine compass?  Is it sensitive to the
> electronics in the dash?  I have always assumes a magnetic compass
> would be pretty close to useless in an automobile.
>
>