The NB1200 Square Kilometre

NB1200 National Grid Square

Based in the Highlands and Islands region of Scotland.

NB1200 is within the post town of Isle Of Harris, Inverness-shire.

The square is within Na h-Eileanan an Iar council.

The Point of Origin (0,0) is 906.94 Kilometres away. This is where the National Grid starts around 80 kilometres west of the Isles of Scilly.

Ordnance Survey Maps for NB1200

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Map Series	link	Ordnance Survey
Explorer 1:25,000 456 North Harris and Loch Seaforth/Ceann a Tuath Na Hearadh Agus Loch Shiphoirt
Explorer 1:25,000 455 South Harris/Ceann a Deas Na Hearadh
Landranger 1:50,000 14 Tarbert & Loch Seaforth	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 NB1200 and the vertical and horizontal line divides the square into four quadrants

Dividing the NB1200 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. NB , 12 and 00

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 NB + 12 + 3 + 00 + 5 would give you the six figure grid reference of NB123005

NB	12		00
NB	12	3	00	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	57.896097	-6.863557	112000	900000
South East Corner	57.896097	-6.845538	113000	900000
North West Corner	57.905691	-6.863557	112000	901000
North East Corner	57.905691	-6.845538	113000	901000