SD 100km National Grid Square
SD square spans the North West English Region & Yorkshire and the Humber English Region.
The SD national grid square measures 100 km by 100 km and has an area of 10,000 kilometres squared.
The technical term for a 100 km map square is a Myriad.
When this 100km square is divided into a grid 10 by 10 it gives the next size of grid square. This unit is called a Hectad and measures 10km square. 100 hectads fit in a 100km square.
Out of the hectads generated from square SD, 82 are land and 18 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 | 53.487194 | -3.541350 | 300000 | 400000 |
| South East Corner | 53.487194 | -2.001466 | 400000 | 400000 |
| North West Corner | 54.395485 | -3.541350 | 300000 | 500000 |
| North East Corner | 54.395485 | -2.001466 | 400000 | 500000 |
10 KM Squares within the SD 100 KM Square
SD08 SD09 SD16 SD17 SD18 SD19 SD20 SD21 SD26 SD27 SD28 SD29 SD30 SD31 SD32 SD33 SD34 SD35 SD36 SD37 SD38 SD39 SD40 SD41 SD42 SD43 SD44
SD45 SD46 SD47 SD48 SD49 SD50 SD51 SD52 SD53 SD54 SD55 SD56 SD57 SD58 SD59 SD60 SD61 SD62 SD63 SD64 SD65 SD66 SD67 SD68 SD69 SD70 SD71