The NT7420 Square Kilometre

NT7420 National Grid Square

Based in the South Scotland region of Scotland.

NT7420 is within the post towns of Jedburgh, Roxburghshire & Kelso, Roxburghshire.

The square is within Scottish Borders council.

The Point of Origin (0,0) is 724.07 Kilometres away. This is where the National Grid starts around 80 kilometres west of the Isles of Scilly.

Ordnance Survey Maps for NT7420

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Map Series	link	Ordnance Survey
Explorer 1:25,000 ol16 The Cheviot Hills, Jedburgh & Wooler	Shop for this map on amazon.co.uk
Landranger 1:50,000 74 Kelso	Shop for this map on amazon.co.uk

This extract is taken from the Ordnance Survey six-inch to the mile series surveyed from 1888-1913. The scale is 1:10,560.

The Square overlayed over the map represents the extent of NT7420 and the vertical and horizontal line divides the square into four quadrants

Dividing the NT7420 Square to get a six figure Grid Reference

A helpful reminder for calculating grid references is across the landing and up the stairs.

For example if your house was located in a square that in the fourth square across and sixth square up and you wanted to work out its six figure grid refence.

First, You would divide the four figure grid reference into three parts. NT , 74 and 20

Count across starting with zero. This would give you three. Make a note that X for Across (A Cross) = 3.

Count up starting with zero. This would give you five. Make a note that Y = 5.

So to put it together NT + 74 + 3 + 20 + 5 would give you the six figure grid reference of NT743205

NT	74		20
NT	74	3	20	5

A six figure grid reference would be accurate to 10 metres. To achieve a greater level of accuracy this 10 metre square would be divided into a grid 10 by 10 and the process repeated.

This would produce an 8 figure grid reference that would be accurate to a square metre!

Corner	Latitude	Longitude	Easting	Northing
South West Corner	55.473129	-2.412948	374000	620000
South East Corner	55.473129	-2.397035	375000	620000
North West Corner	55.482166	-2.412948	374000	621000
North East Corner	55.482166	-2.397035	375000	621000