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- The main work of the Retriangulation was finished in 1962, creating the Ordnance Survey National Grid. This system continued to be used, and measurements refined by ground-based surveying, into the 1980s, after which satellite use took over.
en.wikipedia.org/wiki/Retriangulation_of_Great_Britain
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Discover the history of Ordnance Survey. Beginnings. The name Ordnance Survey hints at how it all began. Britain’s mapping agency has its roots in military strategy: mapping the Scottish Highlands following rebellion in 1745.
- History of the trig pillar
The trig pillar was first used in the retriangulation of...
- History of the trig pillar
The main work of the Retriangulation was finished in 1962, creating the Ordnance Survey National Grid. This system continued to be used, and measurements refined by ground-based surveying, into the 1980s, after which satellite use took over.
The origins of the Ordnance Survey lie in the aftermath of the Jacobite rising of 1745. Prince William, Duke of Cumberland realised that the British Army did not have a good map of the Scottish Highlands to locate Jacobite dissenters such as Simon Fraser, 11th Lord Lovat so that they could be put on trial. [3] .
Apr 19, 2016 · The trig pillar was first used in the retriangulation of Great Britain on 18 April 1936. On that day, a group of surveyors gathered around a white concrete pillar in a field in Cold Ashby and began the retriangulation of Great Britain.
Jun 21, 2020 · Its roots stretch back into the eighteenth century, though it wasn’t until 1801 that the name ‘Ordnance Survey’ was first used when it was written onto a draft document; it first featured on a printed map in 1810. But it was during summer 1791 that the ‘Trigonometrical Survey’ – the basis of the first accurate map of Britain – was initiated.
Oct 14, 2018 · Pointy sticks. Ordnance Survey. In the late 1940s and early 1950s, teams of tape-measure wielding men swarmed around the country with big pointy arrows. They were urban surveyors using fixed...
Jun 18, 2021 · On 18 April 1936, the trig pillar was first used in the retriangulation of Great Britain. On this day, a group of surveyors gathered around a white concrete pillar in a field in Cold Ashby and began the monumental task of mapping Great Britain.
