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SM91
Based in the Mid and West Wales region of Scotland.
The SM91 10 square kilometre grid intersects with the settlements of Crundale,Freystrop,Hook,Hwlffordd,Johnston,Keeston,Llangwm,Merlin's Bridge,Pelcomb Cross,Tiers Cross & Uzmaston.
SM91
SM91 is within the post towns of Haverfordwest, Pembrokeshire & Milford Haven, Pembrokeshire.
The square is within Sir Benfro - Pembrokeshire council.
The SM91 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 SM91, 153 are land and -53 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 | 51.749246 | -5.049737 | 190000 | 210000 |
| South East Corner | 51.749246 | -4.899016 | 200000 | 210000 |
| North West Corner | 51.842700 | -5.049737 | 190000 | 220000 |
| North East Corner | 51.842700 | -4.899016 | 200000 | 220000 |