The SP7126 Square Kilometre

SP7126 National Grid Square

Based in the South East English Region.

SP7126 is within the post town of Buckingham, Buckinghamshire.

The square is within Buckinghamshire council.

The Point of Origin (0,0) is 522.41 Kilometres away. This is where the National Grid starts around 80 kilometres west of the Isles of Scilly.

Ordnance Survey Maps for SP7126

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Map Series	link	Ordnance Survey
Explorer 1:25,000 192 Buckingham and Milton Keynes	Shop for this map on amazon.co.uk	Buy Direct from the Ordnance Survey
Landranger 1:50,000 165 Aylesbury & Leighton Buzzard	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 SP7126 and the vertical and horizontal line divides the square into four quadrants

Dividing the SP7126 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. SP , 71 and 26

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 SP + 71 + 3 + 26 + 5 would give you the six figure grid reference of SP713265

SP	71		26
SP	71	3	26	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	51.927878	-0.968837	471000	226000
South East Corner	51.927878	-0.954088	472000	226000
North West Corner	51.936995	-0.968837	471000	227000
North East Corner	51.936995	-0.954088	472000	227000