Saturday, 25 March 2017

Ordnance Survey Maps

  

After our crit we have decided to continue with the mesh idea. We also want to incorporate maps into our design as they are a big part of the exhibition, each poster being exhibited will be from an area of Leeds therefore will sit somewhere on a map. We want to use the grids from ordnance survey maps as they relate nicely to the grids found on a piece of mesh.




Ordnance Survey is the national mapping agency for Britain and is one of the worlds largest produces of maps. It's name stems from the military connections it has after mapping the Scottish Highlands after the Jacobite Rebellion in 1745 and then surveying the English coasts after the French Revolution. Before this no detailed maps were available so it was difficult to move troops and plan campaigns. Starting in 1747 it took eight years to complete what was known as the 'great map' at a scale of 1.75 inches a mile. Roads, hills, rivers, types of land cover and settlements were recorded. This work paved the way for modern surveying as the importance of accurate maps became acknowledged.

The main part of Ordnance Survey maps we are focusing on is the National Grid

The National Grid is the map reference system on all Ordnance Survey maps to identify the position of any feature. The National Grid breaks Great Britain down into smaller sections first identified by letters and then by numbers. The largest unit of the grid is 500km squares each designated by a prefix letter in alphabetical order. The 500km squares are broken down further into 25 100km squares which are again identified by the letters A-Z. These squares are divided into smaller squares by grid lines representing 10km spacing which are numbered 0-9 from the south west corner in an eastern and northern direction. You can identify a square by referencing two letters and two numbers E.G. TQ 6 3










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