Thanks John.  One GPS intended for auto use does give actual cummulative
milage.

On 8/5/06, John Bange <jbange@gmail.com> wrote:
>
> >  turn on the GPS, switch to the screen with the odometer display
> > and zero it out.  Let it run until you get back home.  Now record what
> the
> > total distance is.  Which units show near zero distance, which show
> actual
> > distance traveled?  Record results, report back to the list with
> make/model
> > data.
>
> I just ran a "there and back" showing 32.4 miles there, 32.4 miles
> back, 64.8 total. Decided to test my mechanical trip meter at the same
> time, and it's within a hundredth or so of 64.8 also. I'm running the
> GoWesty 16" wheels with the larger-than-stock tires, though, which
> "correct" my speedometer's error. Perhaps the odometers record high
> just like the speedo does?
>
> GPS is a Garmin GPS III
>
> --
> John Bange
> '90 Vanagon - "Geldsauger"
>