The SJ7584 Square Kilometre

SJ7584 National Grid Square

Based in the North West English Region.

SJ7584 is within the post towns of Altrincham, Cheshire & Knutsford, Cheshire.

The square is within Cheshire East council.

The Point of Origin (0,0) is 536.73 Kilometres away. This is where the National Grid starts around 80 kilometres west of the Isles of Scilly.

Ordnance Survey Maps for SJ7584

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Map Series	link	Ordnance Survey
Explorer 1:25,000 268 Wilmslow, Macclesfield and Congleton	Shop for this map on amazon.co.uk	Buy Direct from the Ordnance Survey
Landranger 1:50,000 109 Manchester Bolton & Warrington	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 SJ7584 and the vertical and horizontal line divides the square into four quadrants

Dividing the SJ7584 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. SJ , 75 and 84

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 SJ + 75 + 3 + 84 + 5 would give you the six figure grid reference of SJ753845

SJ	75		84
SJ	75	3	84	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	53.352306	-2.377116	375000	384000
South East Corner	53.352306	-2.362014	376000	384000
North West Corner	53.361341	-2.377116	375000	385000
North East Corner	53.361341	-2.362014	376000	385000