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  2. Ordnance Survey - Wikipedia

    en.wikipedia.org/wiki/Ordnance_Survey

    In 1854, "twenty-five inch" maps were introduced with a scale of 1:2500 (25.344 inches to the mile) and the six inch maps were then based on these twenty-five inch maps. The first edition of the two scales was completed by the 1890s, with a second edition completed in the 1890s and 1900s.

  3. 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 ...

  4. Ordnance Survey Great Britain County Series - Wikipedia

    en.wikipedia.org/wiki/Ordnance_Survey_Great...

    The Ordnance Survey began producing six inch to the mile (1:10,560) maps of Great Britain in the 1840s, modelled on its first large-scale maps of Ireland from the mid-1830s. This was partly in response to the Tithe Commutation Act 1836 which led to calls for a large-scale survey of England and Wales.

  5. Spancill Hill, County Clare - Wikipedia

    en.wikipedia.org/wiki/Spancill_Hill,_County_Clare

    Spancilhill Inn. Spancill Hill or Spancilhill (Ordnance Survey spelling Spancel Hill for the hill [1] and settlement, [2] Spancelhill for the electoral division; [3] [1] Irish: Cnoc Uarchoille [1]) is a hill and adjacent dispersed settlement in County Clare, Ireland.

  6. Townland - Wikipedia

    en.wikipedia.org/wiki/Townland

    GeoHive Mapviewer Archived 6 July 2020 at the Wayback Machine: select Data Catalogue>Base Information and Mapping>Historic Map [25 inch (1888–1913) / 6 inch (1837–1842)] for old Ordnance Survey of Ireland maps; Logainm.ie (Placenames Database of Ireland) search/browse by parish/barony/county, English and Irish names; Goblet, Yann M., ed ...

  7. 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 ...

  8. 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.

  9. Civil parishes in Ireland - Wikipedia

    en.wikipedia.org/wiki/Civil_parishes_in_Ireland

    The civil parishes were included on the nineteenth-century maps of the Ordnance Survey of Ireland. [13] At the time of the 1861 census there were 2,428 civil parishes in Ireland (average area 34.8 square kilometres (13.4 sq mi; 8,600 acres)). [9] Poor Law districts were created in 1838, each centered on a large town.