Is Irish National Grid Reference System the correct title, given that the system is used not only through the Irish Republic but also in Northern Ireland too?. It is actually an international, or at least transnational, system. -- Chris j wood 13:53, 23 Oct 2004 (UTC)
Yes. The system is used throughout Ireland, hence "Irish". It's technically international in the sense that it transcends state boundaries (being used both in the Republic of Ireland and Northern Ireland). However, even in Northern Ireland, I doubt you would find many who would consider for example, a trip to the Republic or vice-versa, an international trip. In the same way the Irish rugby team is not a transnational team - it's representing the apolitical Irish nation. In summary, yes, Ireland and Irish are ambiguous terms, but entirely appropriate here. zoney ♣ talk 12:58, 26 Oct 2004 (UTC)
Was the Irish National Grid Reference System really devised by the Ordnance Survey. Certainly that organisation does not now operate in either the Irish Republic or Northern Ireland (which both have their own government mapping organisations). And given that pre-independance Ireland had its own separate civil service, it seems unlikely that they ever did. -- Chris j wood 13:53, 23 Oct 2004 (UTC)
I don't know. It could have been the Ordnance Survey of Ireland (OSI), were they all-island before partition? zoney ♣ talk 12:58, 26 Oct 2004 (UTC)
It's a little confusing that the grid is described as having 25 squares, but the map shows only 20. Also, why was "I" chosen to be the dropped letter? (D'oh! because it looks like the numeral one).--Malcohol13:37, 18 July 2005 (UTC)[reply]
E, K, P, U and Z are sometimes shown along the right side of the grid, but they're not on any maps - maps covering those areas are on the UK grid system, the OSI and OSNI don't make maps covering them, so they're out of use. --Kiand19:30, 15 December 2005 (UTC)[reply]
How do you translate from the Irish National Grid to the extended British National Grid? They both use 100km squares so I assume it is a simple rotation followed by a translation. (anon)
Yes, rotation to realign grid north to true north and a slight jiggle for best fit. It's here somewhere, I've definitely seen a graphic with both on it, with a formula --Red King17:59, 20 December 2005 (UTC)[reply]
