Great Trigonometrical Survey
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What links here
Principal Triangulation of Great Britain
William Lambton
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Pilsdon Pen
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Bardon Hill
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John MacCulloch
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Arc measurement
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Gunter's chain
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Ramsden surveying instruments
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Slieve Donard
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Retriangulation of Great Britain
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Geodetic datum
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Jesse Ramsden
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1792 in science
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Board of Ordnance
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Theodolite
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Hanworth
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Hampton, London
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Royal Observatory, Greenwich
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Nevil Maskelyne
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Carl Friedrich Gauss
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Principal Triangulation of Britain
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