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SN20
Based in the Mid and West Wales region of Scotland.
The SN20 10 square kilometre grid intersects with the settlements of Llanmiloe & Pentywyn.
SN20
SN20 is within the post towns of Carmarthen, Carmarthenshire & Whitland, Carmarthenshire.
The square is within Sir Gaerfyrddin - Carmarthenshire council.
The SN20 national grid square measures 10 km by 10 km and has an area of 1,000 kilometres squared.
The technical term for a 10 km map square is a Hectad.
When this 10 km square is divided into a grid 10 by 10 it gives the next size of grid square. This unit is called a Monad and measures 1km square. 100 monads fit in a 10km square.
Out of the monads generated from square SN20, 391 are land and -291 are sea. Sea squares are disregarded on this site as they contain no land features.
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| Corner | Latitude | Longitude | Easting | Northing |
|---|---|---|---|---|
| South West Corner | 51.669870 | -4.609596 | 220000 | 200000 |
| South East Corner | 51.669870 | -4.459963 | 230000 | 200000 |
| North West Corner | 51.762815 | -4.609596 | 220000 | 210000 |
| North East Corner | 51.762815 | -4.459963 | 230000 | 210000 |