p5-Geo-Coordinates-OSGB-2.20p1

An implementation of co-ordinate conversion for England, Wales, and Scotland based on formulae and data published by the Ordnance Survey of Great Britain. These modules convert accurately between coordinates given in latitude and longitude and the OSGB national grid reference system (as used for maps of England, Wales, and Scotland). This code is fine tuned to the British national grid system. It is of no use outside Britain. In fact it's only really useful in the areas covered by the OS's main series of maps, which excludes the Channel Islands and Northern Ireland.