![]() ![]() When using the Digimap Gazetteer service, you may need to convert from standard National Grid references to Eastings and Northings. However, National Grid references are measured differently, using letters to represent the 100km reference, for example, NS123456. For example, Jedburgh is at NT6520 or 365000 East, 620000 North. The origin of the National Grid is 000000 (metres) East and 000000 (metres) North. If there is a quadrant name present, it indicates one quarter of the area indicated by the rest of the grid reference.Įastings and Northings are measured in hundreds of thousands of metres (100,000 metres). No digits? The Grid Reference applies to the complete 100km square.10 digits: the Easting and Northing are each in units of 1m.8 digits: the Easting and Northing are each in units of 10m.6 digits: the Easting and Northing are each in units of 100m. ![]() 4 digits: the Easting and Northing are each in units of 1km.2 digits: the Easting and Northing are each in units of 10km.The second half of the digits give the Northing, or distance North from the edge of the 100km square.The first half of the digits give the Easting, or distance East from the edge of the 100km square.The digits identify a location within a 100km square. The resulting 100km squares covering Great Britain are shown here. The letters are allocated in alphabetical order from left to right and top to bottom, and omitting the letter “I”.Įach 500km square is then divided into twenty five 100km squares, and these squares are then labelled using the same pattern of letters. Ordnance Survey’s products lie completely within four of these 500km squares: H, N, S and T. The first letter identifies a 500km square, from the diagram shown here. Two letters together identify a 100km square, and are derived as follows: 1 However, spaces are included here for legibility. These components are usually written without spaces. a quadrant name: “NW”, “NE”, “SW” or “SE”, standing for North West, North East, South West and South East.an even number of digits, optionally followed by.OS introduction to the British National Grid.These references are often used in conjunction with Ordnance Survey maps, and are used to give the names of individual Ordnance Survey data tiles. The position of any point in Great Britain can be described by its National Grid Reference. ![]()
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