The SD5900 Square Kilometre

SD5900 National Grid Square

Based in the North West English Region.

The SD5900 square kilometre intersects with the settlements of Ashton-in-Makerfield & Bryn Gates.

SD5900 is within the post town of Wigan, Lancashire.

The square is within Wigan District council.

The Point of Origin (0,0) is 537.48 Kilometres away. This is where the National Grid starts around 80 kilometres west of the Isles of Scilly.

Ordnance Survey Maps for SD5900

If you purchase a map through the links below, we may earn an affiliate commission.

Map Series	link	Ordnance Survey
Explorer 1:25,000 275 Liverpool, St Helens - Widnes and Runcorn	Shop for this map on amazon.co.uk
Explorer 1:25,000 276 Bolton, Wigan and Warrington	Shop for this map on amazon.co.uk
Landranger 1:50,000 108 Liverpool	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 SD5900 and the vertical and horizontal line divides the square into four quadrants

Dividing the SD5900 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. SD , 59 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 SD + 59 + 3 + 00 + 5 would give you the six figure grid reference of SD593005

SD	59		00
SD	59	3	00	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	53.495110	-2.619612	359000	400000
South East Corner	53.495110	-2.604408	360000	400000
North West Corner	53.504175	-2.619612	359000	401000
North East Corner	53.504175	-2.604408	360000	401000