The SJ4666 Square Kilometre

SJ4666 National Grid Square

Based in the North West English Region.

SJ4666 is within the post town of Chester, Cheshire.

The square is within Cheshire West and Chester council.

The Point of Origin (0,0) is 503.66 Kilometres away. This is where the National Grid starts around 80 kilometres west of the Isles of Scilly.

Ordnance Survey Maps for SJ4666

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Map Series	link	Ordnance Survey
Explorer 1:25,000 266 Wirral and Chester	Shop for this map on amazon.co.uk	Buy Direct from the Ordnance Survey
Landranger 1:50,000 117 Chester	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 SJ4666 and the vertical and horizontal line divides the square into four quadrants

Dividing the SJ4666 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 , 46 and 66

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 + 46 + 3 + 66 + 5 would give you the six figure grid reference of SJ463665

SJ	46		66
SJ	46	3	66	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	53.188351	-2.809776	346000	366000
South East Corner	53.188351	-2.794642	347000	366000
North West Corner	53.197439	-2.809776	346000	367000
North East Corner	53.197439	-2.794642	347000	367000