The NN8245 Square Kilometre

NN8245 National Grid Square

Based in the Mid Scotland and Fife region of Scotland.

NN8245 is within the post town of Aberfeldy, Perthshire.

The square is within Perth and Kinross council.

The Point of Origin (0,0) is 796.59 Kilometres away. This is where the National Grid starts around 80 kilometres west of the Isles of Scilly.

Ordnance Survey Maps for NN8245

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Map Series	link	Ordnance Survey
Explorer 1:25,000 379 Dunkeld, Aberfeldy and Glen Almond		Buy Direct from the Ordnance Survey
Landranger 1:50,000 52 Pitlochry & Crieff	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 NN8245 and the vertical and horizontal line divides the square into four quadrants

Dividing the NN8245 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. NN , 82 and 45

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 NN + 82 + 3 + 45 + 5 would give you the six figure grid reference of NN823455

NN	82		45
NN	82	3	45	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	56.582028	-3.923114	282000	745000
South East Corner	56.582028	-3.906389	283000	745000
North West Corner	56.591257	-3.923114	282000	746000
North East Corner	56.591257	-3.906389	283000	746000