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  2. Ordnance Survey Ireland - Wikipedia

    en.wikipedia.org/wiki/Ordnance_Survey_Ireland

    Under the Ordnance Survey Ireland Act 2001, the Ordnance Survey of Ireland was dissolved and a new corporate body called Ordnance Survey Ireland was established in its place. [3] OSI was an autonomous corporate body, with a remit to cover its costs of operation from its sales of data and derived products, which sometimes raised concerns about ...

  3. Geographical centre of Ireland - Wikipedia

    en.wikipedia.org/wiki/Geographical_centre_of_Ireland

    The Geographical Centre of Ireland, according to an investigation and calculation carried out by the Official Irish Government Mapping Agency, Ordnance Survey Ireland (OSI) published on the official OSI website on 24 February 2022 is near the village of Castletown Geoghegan, County Westmeath.

  4. Irish grid reference system - Wikipedia

    en.wikipedia.org/wiki/Irish_grid_reference_system

    In general, neither Ireland nor Great Britain uses latitude or longitude in describing internal geographic locations. Instead grid reference systems are used for mapping.. The national grid referencing system was devised by the Ordnance Survey, and is heavily used in their survey data, and in maps (whether published by the Ordnance Survey of Ireland, the Ordnance Survey of Northern Ireland or ...

  5. Ordnance Survey - Wikipedia

    en.wikipedia.org/wiki/Ordnance_Survey

    After the Ordnance Survey published its first large-scale maps of Ireland in the mid-1830s, the Tithe Act 1836 led to calls for a similar six-inch to the mile survey in England and Wales. Official procrastination followed, but the development of the railways added to pressure that resulted in the Ordnance Survey Act 1841 ( 4 & 5 Vict. c. 30 ...

  6. Ordnance Survey Memoirs of Ireland - Wikipedia

    en.wikipedia.org/wiki/Ordnance_Survey_Memoirs_of...

    The Ordnance Memoir of Ireland was a projected 1830s topography of Ireland to be published alongside the maps of the Ordnance Survey of Ireland using materials gathered by surveyors as they traversed the country. The project was cancelled in 1840 as too expensive and beyond the survey's original scope.

  7. Thomas Frederick Colby - Wikipedia

    en.wikipedia.org/wiki/Thomas_Frederick_Colby

    An officer in the Royal Engineers, Colby overcame the loss of one hand in a shooting accident to begin in 1802 a lifelong connection with the Ordnance Survey. His most important work was the Survey of Ireland. He began planning this enormous enterprise in 1824 and directed it until 1846, in which year the final maps made by the survey were ...

  8. Tailte Éireann - Wikipedia

    en.wikipedia.org/wiki/Tailte_Éireann

    Tailte Éireann (lit. ' Irish Lands ') is a state agency in Ireland responsible for property registrations, property valuation and national mapping services. It was established on 1 March 2023 from a merger of the Property Registration Authority (PRA), the Valuation Office (VO) and Ordnance Survey Ireland (OSI).

  9. List of islands of County Mayo - Wikipedia

    en.wikipedia.org/wiki/List_of_islands_of_County_Mayo

    Map of County Mayo's western seaboard Achill is Ireland's largest island Clew Bay contains 141 named islands, along with numerous tidal islets This articles lists the islands of County Mayo, the mainland of which is part of the island of Ireland. Included in this list are named offshore and freshwater islands as recorded by Ordnance Survey Ireland or the Placenames Database of Ireland ...

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