07-10-2011, 10:39 PM
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#10 (permalink)
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Batman Junior
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
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And I did borrow a GPS. It was very close to the car's odo:
30 km indicated
29.85 km GPS
That means the odo is over-reporting distance traveled by 0.5% compared to the GPS.
And this single comparison to the Google Earth Method (TM) shows it's very close (and seems to confirm the measurement will be short if there are lots of -- or big -- elevation changes on the measured route).
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