GPS Waymark Grid References
Q. Looking at the text files that list the waypoints for any given route I notice that both easting and northing grid references are given in 2 letter + 5 number rather than 2 letter + 3 number references as used by ordnance survey maps.
Why is this?
Yours,
John McGinley, Brighton
A. The five figure numbers give accuracy to the nearest metre - while the standard three figure grid reference only gives accuracy to the nearest 100m.
See the question on GPS Waypoint Designations for more information
Hope this helps
Mike (Editor)
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