The NT1561 Square Kilometre

NT1561 National Grid Square

Based in the Lothian region of Scotland.

NT1561 is within the post town of Balerno, Midlothian.

The square is within City of Edinburgh council.

The Point of Origin (0,0) is 732.22 Kilometres away. This is where the National Grid starts around 80 kilometres west of the Isles of Scilly.

Ordnance Survey Maps for NT1561

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Map Series	link	Ordnance Survey
Explorer 1:25,000 344 Pentland Hills		Buy Direct from the Ordnance Survey
Landranger 1:50,000 65 Falkirk & Linlithgow	Shop for this map on amazon.co.uk	Buy Direct from the Ordnance Survey
Landranger 1:50,000 66 Edinburgh Penicuik & North Berwick	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 NT1561 and the vertical and horizontal line divides the square into four quadrants

Dividing the NT1561 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 , 15 and 61

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 + 15 + 3 + 61 + 5 would give you the six figure grid reference of NT153615

NT	15		61
NT	15	3	61	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	55.834710	-3.358985	315000	661000
South East Corner	55.834710	-3.342711	316000	661000
North West Corner	55.843867	-3.358985	315000	662000
North East Corner	55.843867	-3.342711	316000	662000