EPSG
"The Irish Grid - A Description of the Co-ordinate Reference System" published by Ordnance Survey of Ireland, Dublin and Ordnance Survey of Northern Ireland, Belfast.
2003-06-27
Topographic mapping.
Topographic mapping before 1956 in Northern Ireland and 1970 in the Republic of Ireland. Replaced by Belfast Lough and Malin Head (datum codes 5130-31).
Ireland - onshore. United Kingdom (UK) - Northern Ireland (Ulster) - onshore.
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "VerticalReferenceFrame", "name": "Poolbeg", "scope": "Topographic mapping.", "area": "Ireland - onshore. United Kingdom (UK) - Northern Ireland (Ulster) - onshore.", "bbox": { "south_latitude": 51.39, "west_longitude": -10.56, "north_latitude": 55.43, "east_longitude": -5.34 }, "id": { "authority": "EPSG", "code": 5152 } }