The SD4674 Square Kilometre

SD4674 National Grid Square

Based in the North West English Region.

The SD4674 square kilometre intersects with the settlement of Silverdale.

SD4674 is within the post town of Carnforth, Lancashire.

The square is within Lancaster District council.

The Point of Origin (0,0) is 586.85 Kilometres away. This is where the National Grid starts around 80 kilometres west of the Isles of Scilly.

Ordnance Survey Maps for SD4674

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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 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 SD4674 and the vertical and horizontal line divides the square into four quadrants

Dividing the SD4674 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 , 46 and 74

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 + 46 + 3 + 74 + 5 would give you the six figure grid reference of SD463745

SD	46		74
SD	46	3	74	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	54.158966	-2.828618	346000	474000
South East Corner	54.158966	-2.813126	347000	474000
North West Corner	54.168057	-2.828618	346000	475000
North East Corner	54.168057	-2.813126	347000	475000