Based in the Mid and West Wales region of Scotland.
The SN12 10 square kilometre grid intersects with the settlements of Efailwen,Glandy Cross,Llandissilio,Llanglydwen & Llangolman.
SN12 is within the post towns of Clynderwen, Carmarthenshire, Glogue, Pembrokeshire, Llanfyrnach, Pembrokeshire & Whitland, Carmarthenshire.
The square is within Sir Benfro - Pembrokeshire & Sir Gaerfyrddin - Carmarthenshire councils.
The SN12 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 SN12, 446 are land and -346 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 | 51.846193 | -4.765310 | 210000 | 220000 |
| South East Corner | 51.846193 | -4.614789 | 220000 | 220000 |
| North West Corner | 51.939323 | -4.765310 | 210000 | 230000 |
| North East Corner | 51.939323 | -4.614789 | 220000 | 230000 |