The Ordnance Survey (OS) is the national mapping agency for Great Britain. The agency's name indicates its original military purpose (see ordnance and...
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Ordnance Survey Ireland (OSI; Irish: Suirbhéireacht Ordanáis Éireann) was the national mapping agency of the Republic of Ireland. It was established on...
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The Ordnance Survey National Grid reference system (OSGB), also known as British National Grid (BNG), is a system of geographic grid references, distinct...
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Ordnance Survey Ordnance Survey of Northern Ireland United States The National Geodetic Survey (NGS; formerly United States Coast and Geodetic Survey) The...
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William Roy (section Histories of the Ordnance Survey)
to the creation of the Ordnance Survey in 1791, the year after his death. His technical work in the establishment of a surveying baseline won him the Copley...
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The Ordnance Survey International or Ordnance Survey Overseas Directorate its predecessors built an archive of air photography, map and survey records...
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An ordnance datum (OD) is a vertical datum used by an ordnance survey as the basis for deriving altitudes on maps. A spot height may be expressed as above...
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the basis for deriving altitudes on maps Ordnance Survey, the national mapping agency for Great Britain Ordnance Corps (disambiguation) This disambiguation...
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The Board of Ordnance was a British government body. Established in the Tudor period, it had its headquarters in the Tower of London. Its primary responsibilities...
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The Ordnance Survey of Jerusalem of 1864–65 was the first scientific mapping of Jerusalem, and the first Ordnance Survey to take place outside the United...
12 KB (1,579 words) - 17:18, 17 February 2023