The NR7558 Square Kilometre

NR7558 National Grid Square

Based in the Highlands and Islands region of Scotland.

NR7558 is within the post town of Tarbert, Argyllshire.

The square is within Argyll and Bute council.

The Point of Origin (0,0) is 680.87 Kilometres away. This is where the National Grid starts around 80 kilometres west of the Isles of Scilly.

Ordnance Survey Maps for NR7558

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Map Series	link	Ordnance Survey
Explorer 1:25,000 357 Kintyre North		Buy Direct from the Ordnance Survey
Landranger 1:50,000 62 North Kintyre

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 NR7558 and the vertical and horizontal line divides the square into four quadrants

Dividing the NR7558 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. NR , 75 and 58

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 NR + 75 + 3 + 58 + 5 would give you the six figure grid reference of NR753585

NR	75		58
NR	75	3	58	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	55.762867	-5.588818	175000	658000
South East Corner	55.762867	-5.572089	176000	658000
North West Corner	55.772298	-5.588818	175000	659000
North East Corner	55.772298	-5.572089	176000	659000