Quote:
Originally Posted by ETR3(SS)
It's a measurement in meters from the equator and prime meridian.
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On the map each degree in longitude or latitude is 120km, or 120,000. meters. Divide that by 1852 to get in nautical miles.
Check the coordinates on the map of any clear protruding peninsula near pole-circle areas (or any meridian far from Greenwich) and you'll find that those match up pretty nicely with degree-coordinates in Google Earth/Maps. As far as the resolution goes anyway.