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  2. Ordnance Survey - Wikipedia

    en.wikipedia.org/wiki/Ordnance_Survey

    The original draftsman's drawings for the area around St Columb Major in Cornwall, made in 1810. Detail from 1901 Ordnance Survey map of the Imperial fortress colony of Bermuda (showing St. George's Town and St. George's Garrison), compiled from surveys carried out between 1897 and 1899 by Lieutenant Arthur Johnson Savage, Royal Engineers.

  3. 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.

  4. Principal Triangulation of Great Britain - Wikipedia

    en.wikipedia.org/wiki/Principal_Triangulation_of...

    The first Ramsden theodolite as used by Roy. (Destroyed by bomb damage in 1941.) In the aftermath of the Jacobite rising of 1745 it was recognised that there was a need for an accurate map of the Scottish Highlands and the necessary survey was initiated in 1747 by Lieutenant-Colonel David Watson, a Deputy Quartermaster-General of the Board of Ordnance.

  5. Digimap - Wikipedia

    en.wikipedia.org/wiki/Digimap

    Digimap is a web mapping and online data delivery service developed by the EDINA national data centre for UK academia. It offers a range of on-line mapping and data download facilities which provide maps and spatial data from Ordnance Survey, British Geological Survey, Landmark Information Group and OceanWise Ltd Ltd., (marine mapping data and charts from the UK Hydrographic Office ...

  6. Ordnance Survey Drawings - Wikipedia

    en.wikipedia.org/wiki/Ordnance_Survey_Drawings

    The Ordnance Survey Drawings are a series of 351 of the original preliminary drawings made by the surveyors of the Ordnance Survey between the 1780s and 1840 in preparation for the publication of the one-inch-to-the-mile "Old Series" of maps of England and Wales.

  7. Ramsden surveying instruments - Wikipedia

    en.wikipedia.org/wiki/Ramsden_surveying_instruments

    "An Account of the Trigonometrical Survey Carried on in the Years 1791, 1792, 1793, and 1794". Philosophical Transactions of the Royal Society. 84: 414–622. doi: 10.1098/rstl.1795.0023. Owen, Tim; Pilbeam, Elaine (1992). Ordnance Survey, map makers to Britain since 1791. Southampton: Ordnance Survey (HMSO). ISBN 9780319002490. OCLC 28220563.

  8. Category:Old Ordnance Survey map images - Wikipedia

    en.wikipedia.org/wiki/Category:Old_Ordnance...

    Media in category "Old Ordnance Survey map images" The following 3 files are in this category, out of 3 total. 06-english map of 1915-detail- nla.obj-234275744.jpg 1,459 × 1,641; 669 KB

  9. George Petrie (antiquarian) - Wikipedia

    en.wikipedia.org/wiki/George_Petrie_(antiquarian)

    He is often called "the father of Irish archaeology". His survey of the tombs at Carrowmore still informs study of the site today. From 1833 to 1843, he was employed by Thomas Colby and Thomas Larcom as head of the Topographical Department (the antiquities division) of the Irish Ordnance Survey. Amongst his staff were John O'Donovan and Eugene ...