The SO2315 Square Kilometre

SO2315 National Grid Square

Based in the Mid and West Wales region of Scotland & South Wales East region of Scotland.

SO2315 is within the post towns of Abergavenny, Monmouthshire & Crickhowell, Brecknockshire.

The square is within Powys - Powys & Sir Fynwy - Monmouthshire councils.

The Point of Origin (0,0) is 388.01 Kilometres away. This is where the National Grid starts around 80 kilometres west of the Isles of Scilly.

Ordnance Survey Maps for SO2315

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Map Series	link	Ordnance Survey
Explorer 1:25,000 ol13 Brecon Beacons National Park - Eastern area	Shop for this map on amazon.co.uk
Landranger 1:50,000 161 Abergavenny & The Black Mountains	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 SO2315 and the vertical and horizontal line divides the square into four quadrants

Dividing the SO2315 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. SO , 23 and 15

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 SO + 23 + 3 + 15 + 5 would give you the six figure grid reference of SO233155

SO	23		15
SO	23	3	15	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	51.828294	-3.118970	323000	215000
South East Corner	51.828294	-3.104240	324000	215000
North West Corner	51.837420	-3.118970	323000	216000
North East Corner	51.837420	-3.104240	324000	216000