Fixed surveying station, used in geodetic surveying and other surveying projects in its vicinity.- Triangulation station
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Angle-iron could be placed to form a "bench" for a leveling rod, thus ensuring that a leveling rod could be accurately repositioned in the same place in the future.
Triangulation points, also known as trig points, are marks with a precisely established horizontal position.
National mapping agency for Great Britain.
The new Director General, Major-General Malcolm MacLeod, started the retriangulation of Great Britain, an immense task involving the erection of concrete triangulation pillars ("trig points") on prominent hilltops as infallible positions for theodolites.
Village and civil parish in West Northamptonshire in England.
The British Ordnance Survey's first trig point, the triangular post used by surveyors, was erected on 18 April 1936 near Cold Ashby.
The head of the Trigonometrical and Levelling Division of the Ordnance Survey responsible for the 26-year-long retriangulation of Great Britain (1936–1962) and was the first Director General of the Directorate of Overseas Surveys (1946–1955).
Hotine was responsible for the design of the triangulation pillars constructed during the Geodetic resurvey of Britain.
Highest mountain in Northern Ireland and the wider province of Ulster, with a height of 850 m. The highest of the Mourne Mountains, it is near the town of Newcastle on the eastern coast of County Down, overlooking the Irish Sea.
They camped on the mountaintop from late July until late November that year and used the two cairns to make triangulation points, badly damaging the cairns.
Ceremonial county in North East England.
The highest point (county top) of historic County Durham is the trig point (not the summit) of Burnhope Seat, height 746 m, between Weardale and Teesdale on the border with historic Cumberland in the far west of the county.
Highest hill in West Yorkshire, England.
The triangulation column ("trig point") and highest point on Black Hill (and the highest point in West Yorkshire) is on a small elevated mound, called Soldiers' Lump.
The Brendon Hills are a range of hills in west Somerset, England.
The highest point of the range is Lype Hill at 1388 ft above sea level with a secondary summit several kilometres to the southeast at 1350 ft. Both points are marked by Ordnance Survey trig points and are located within enclosed farmland.
Hill overlooking the English Channel near Folkestone in the south-east corner of Kent, England.
The highest point is on a covered reservoir next to the trig point; the highest natural point is nearby, probably close to the road to the village of Paddlesworth, near a transmitter mast, but the relatively flat summit gives no real impression of being on top of a hill.
Line between two points on the earth's surface and the direction and distance between them.
In a triangulation network, at least one baseline between two stations needs to be measured to calculate the size of the triangles by trigonometry.