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OS-Net | Ordnance Survey
Ordnance Survey produces digital and paper maps and OS MasterMap for business, leisure, government and education, with quality Crown copyright maps of Great Britain.
ordnance survey, GPS, os net, osnet, maps, mapping, digital mapping data
OSGB36 National Grid is now defined by the ETRS89 (European Terrestrial Reference System 1989) coordinates of the Ordnance Survey National GPS Network plus the definitive OSTN15 transformation. To obtain true OSGB36 National Grid coordinates for a point
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