UK national grid. Travel Tips

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UK national grid. Travel Tips

Tourist tips

During the Second World War, the British National Mapping Office developed its own positioning system called National grid. It is similar in principle to the SUPM, but covers only the territory of England, Scotland and Wales and does not apply to Northern Ireland or the Republic of Ireland.

The national grid is based on 25 squares of 100x100 km and covers an area from the Isles of Scilly in the southwest to Shetland in the northeast. Each square is designated by two letters (from Hb in the northwest to TU in the southeast) and is divided into 100 squares of 10x10 km, which, in turn, contain 100 squares of 1x1 km.

All 1:50 and 000:1 British National Ordnance Survey maps have a National Grid with 25 km line spacing, making it extremely easy to plot and read coordinates without the need for a ruler, pencil or overlay template.

Author: N. Wilson

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