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Ben Nevis 1345, The Maths

The latest OS calculations reveal that Ben Nevis is taller than originally thought. Britain’s highest point will now officially appear on all digital and new paper maps as 1,345m and not 1,344m. It’s part of the OS brief to take meticulous care measuring every single part of Britain – but when it comes to the highest point in the land, the summit of Ben Nevis, all the state of the art, hi tech equipment, computer power and brain power have been brought to bear. In the first of a series of short videos explaining events, here is how Geodetic Consultant Mark Greaves has made the calculation which has made history.

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