The Ordnance Survey (OS) is the national mapping agency for Great Britain. The agency's name indicates its original military purpose (see ordnance and...

Ordnance Survey Ireland (OSI; Irish: Suirbhéireacht Ordanáis Éireann) was the national mapping agency of the Republic of Ireland. It was established on...

The Ordnance Survey National Grid reference system (OSGB), also known as British National Grid (BNG), is a system of geographic grid references used in...

Ordnance Survey Ordnance Survey of Northern Ireland United States The National Geodetic Survey (NGS; formerly United States Coast and Geodetic Survey) The...

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...

the basis for deriving altitudes on maps Ordnance Survey, the national mapping agency for Great Britain Ordnance Corps (disambiguation) This disambiguation...

original sense. Detailed military surveys in Britain (beginning in the late eighteenth century) were called Ordnance Surveys, and this term was used into the...

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...

Tim; Pilbeam, Elaine (1992). Ordnance Survey. Southampton, England: Ordnance Survey. p. 64. ISBN 0-319-00498-8. Ordnance Survey (1957). 172 Chatham & Maidstone...

triangulation survey of the whole of Great Britain and Ireland, carried out between 1791 and 1853 under the auspices of the Board of Ordnance. The aim of...

mapping and surveying Ordnance Survey, a national mapping agency for Great Britain U.S. National Geodetic Survey, performing geographic surveys as part of...

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...

The Ordnance Survey International or Ordnance Survey Overseas Directorate its predecessors built an archive of air photography, map and survey records...

datum and Ordnance Survey National Grid in use today. The retriangulation was begun in 1935 by the Director General of the Ordnance Survey, Major-General...

visited County Roscommon in 1837, while compiling information for the Ordnance Survey. Entering St Peter's parish in Athlone in June 1837, he wrote, "I have...

comprised several administrative counties and county boroughs. The Ordnance Survey adopted the term 'geographical county' to describe the widest definition...

century, but were instead known by local knowledge and custom. When the Ordnance Survey started producing large scale maps, they had to undertake extensive...

creation of the Ordnance Survey itself; work was begun in earnest in 1790, when the Board of Ordnance began a national military survey at one-inch-to-the-mile...

defensive emplacements (thus the name and history of the United Kingdom's Ordnance Survey). As such, elevation information was of vital importance. As they evolved...

Valuation Office (VO) and Ordnance Survey Ireland (OSI). In January 2018, the departmental responsibility relating to the Ordnance Survey Ireland, the Property...

remeasured to be 1344.527m by Ordnance Survey. The height of Ben Nevis will therefore be shown on new Ordnance Survey maps as 1,345 metres (4,411 ft)...

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...

have a name of its own; it was labelled Sca-Fell Higher Top by the Ordnance Survey in their initial work in Cumbria in the first decade of the 19th century...

he spent most of his career as the archaeological officer of the Ordnance Survey (OS) and also wrote a range of books on archaeological subjects. Born...

from Norman manors, plantation divisions, or later creations of the Ordnance Survey. The total number of inhabited townlands in Ireland was 60,679 in 1911...

produced by the Ordnance Survey in 1931. The Ordnance Survey produced a revised folio in 1954–1957, and then carried out a complete re-survey in 1979–80....

widely used on Ordnance Survey benchmarks. Broad arrow marks were also used by Commonwealth countries on their ordnance. The Board of Ordnance was absorbed...

GetOutside. Ordnance Survey. Retrieved 4 December 2023. "Blakeley Green, City of Wolverhampton - area information, map". OS GetOutside. Ordnance Survey. Retrieved...

editor. OpenStreetMap was created by Steve Coast in response to the Ordnance Survey, the United Kingdom's national mapping agency, failing to release its...

The former offices of Ordnance Survey are situated in London Road, Southampton, close to the junction with The Avenue, and are now part of the city's...