The SD3171 Square Kilometre

SD3171 National Grid Square

Based in the North West English Region.

The square is within South Lakeland District council.

The Point of Origin (0,0) is 575.68 Kilometres away. This is where the National Grid starts around 80 kilometres west of the Isles of Scilly.

Ordnance Survey Maps for SD3171

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

Map Series	link	Ordnance Survey
Explorer 1:25,000 ol7 The English Lakes - South Eastern area	Shop for this map on amazon.co.uk
Landranger 1:50,000 96 Barrow-in-Furness & South Lakeland	Shop for this map on amazon.co.uk	Buy Direct from the Ordnance Survey
Landranger 1:50,000 97 Kendal & Morecambe	Shop for this map on amazon.co.uk	Buy Direct from the Ordnance Survey

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 SD3171 and the vertical and horizontal line divides the square into four quadrants

Dividing the SD3171 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 , 31 and 71

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 + 31 + 3 + 71 + 5 would give you the six figure grid reference of SD313715

SD	31		71
SD	31	3	71	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	54.130208	-3.057647	331000	471000
South East Corner	54.130208	-3.042117	332000	471000
North West Corner	54.139327	-3.057647	331000	472000
North East Corner	54.139327	-3.042117	332000	472000