The SU2499 Square Kilometre

SU2499 National Grid Square

Based in the South East English Region & South West English Region.

The SU2499 square kilometre intersects with the settlement of Kelmscott.

SU2499 is within the post town of Lechlade, Gloucestershire.

The square is within Cotswold District & West Oxfordshire District councils.

The Point of Origin (0,0) is 468.38 Kilometres away. This is where the National Grid starts around 80 kilometres west of the Isles of Scilly.

Ordnance Survey Maps for SU2499

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Map Series	link	Ordnance Survey
Explorer 1:25,000 170 Abingdon, Wantage and Vale of White Horse	Shop for this map on amazon.co.uk	Buy Direct from the Ordnance Survey
Explorer 1:25,000 ol45 The Cotswolds	Shop for this map on amazon.co.uk	Buy Direct from the Ordnance Survey
Landranger 1:50,000 163 Cheltenham & Cirencester	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 SU2499 and the vertical and horizontal line divides the square into four quadrants

Dividing the SU2499 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. SU , 24 and 99

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 SU + 24 + 3 + 99 + 5 would give you the six figure grid reference of SU243995

SU	24		99
SU	24	3	99	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	51.689207	-1.654197	424000	199000
South East Corner	51.689207	-1.639660	425000	199000
North West Corner	51.698242	-1.654197	424000	200000
North East Corner	51.698242	-1.639660	425000	200000