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The Irish grid reference system is a system of geographic grid references used for paper mapping in Ireland (both Northern Ireland and the Republic of Ireland). [1] Any location in Ireland can be described in terms of its distance from the origin (0, 0), which lies off the southwest coast. [2]
The older Irish grid reference system required GPS measurements to be "translated" (using co-ordinate transformations).The more precise the GPS measurements were, the more the translation process introduced inaccuracies.
Greek Grid: EPSG:2100: Iraq: Iraq National Grid [citation needed] EPSG:3893: Ireland: Irish grid reference system: Ireland including Northern Ireland: Israel: Israeli Transverse Mercator: EPSG:2039: Israel & Palestinian territories: Netherlands: Stelsel van de Rijksdriehoeksmeting (RD) [4] EPSG:28992: European Netherlands: New Zealand: New ...
To reduce the number of figures needed to give a grid reference, the grid is divided into 100 km squares, which each have a two-letter code. National Grid positions can be given with this code followed by an easting and a northing both in the range 0 and 99999m. The projection formulae differ slightly from the Redfearn formulae presented here.
A typical map with grid lines. The Ordnance Survey National Grid (United Kingdom) and other national grid systems use similar approaches. In Ordnance Survey maps, each Easting and Northing grid line is given a two-digit code, based on the British national grid reference system with an origin point just off the southwest coast of the United ...
The Ordnance Survey National Grid reference system (OSGB), also known as British National Grid (BNG), [1] [2] is a system of geographic grid references, distinct from latitude and longitude, whereby any location in Great Britain can be described in terms of its distance from the origin (0, 0), which lies to the west of the Isles of Scilly.
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Mountjoy House, the headquarters of Ordnance Survey Ireland, in the Phoenix Park, Dublin. Thomas Colby, the long-serving Director-General of the Ordnance Survey in Great Britain, was the first to suggest that the Ordnance Survey be used to map Ireland. A highly detailed survey of the whole of Ireland would be extremely useful for the British ...