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The NT8400 Square Kilometre

NT8400 National Grid Square

Based in the North East English Region.

NT8400 is within the post town of Newcastle Upon Tyne, Northumberland.

The square is within Northumberland council.

The Point of Origin (0,0) is 712.36 Kilometres away. This is where the National Grid starts around 80 kilometres west of the Isles of Scilly.

Ordnance Survey Maps for NT8400

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Map SerieslinkOrdnance Survey
Explorer 1:25,000 ol42 Kielder Water & ForestShop for this map on amazon.co.ukBuy Direct from the Ordnance Survey
Explorer 1:25,000 ol16 The Cheviot Hills, Jedburgh & WoolerShop for this map on amazon.co.uk
Landranger 1:50,000 80 Cheviot Hills & Keilder ForestShop for this map on amazon.co.uk
NW
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Key of Northings for the NT8400 National Grid Square
Map of the NT8400 National Grid Square
Key of Eastings for the NT8400 National Grid Square
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A historical Ordnance Survey Map Sheet showing Grid Square NT8400.

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 NT8400 and the vertical and horizontal line divides the square into four quadrants

Dividing the NT8400 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 , 84 and 00

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 + 84 + 3 + 00 + 5 would give you the six figure grid reference of NT843005

NT8400
NT843005

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!


CornerLatitudeLongitudeEastingNorthing
South West Corner55.293853-2.253572384000600000
South East Corner55.293853-2.237767385000600000
North West Corner55.302870-2.253572384000601000
North East Corner55.302870-2.237767385000601000