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TM21
Based in the Eastern English Region.
The TM21 10 square kilometre grid intersects with the settlements of Clacton-on-Sea,Frinton-on-Sea & Great Holland.
TM21
TM21 is within the post towns of Clacton-on-sea, Essex & Frinton-on-sea, Essex.
The square is within Tendring District council.
The TM21 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 TM21, 165 are land and -65 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 | 51.741483 | 1.185514 | 620000 | 210000 |
| South East Corner | 51.741483 | 1.336735 | 630000 | 210000 |
| North West Corner | 51.835267 | 1.185514 | 620000 | 220000 |
| North East Corner | 51.835267 | 1.336735 | 630000 | 220000 |