The NH7399 Square Kilometre

NH7399 National Grid Square

Based in the Highlands and Islands region of Scotland.

NH7399 is within the post towns of Dornoch, Sutherland & Rogart, Sutherland.

The square is within Highland council.

The Point of Origin (0,0) is 939.54 Kilometres away. This is where the National Grid starts around 80 kilometres west of the Isles of Scilly.

Ordnance Survey Maps for NH7399

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Map Series	link	Ordnance Survey
Explorer 1:25,000 441 Lairg, Bonar Bridge and Golspie		Buy Direct from the Ordnance Survey
Landranger 1:50,000 16 Lairg & Loch Shin	Shop for this map on amazon.co.uk	Buy Direct from the Ordnance Survey
Landranger 1:50,000 21 Dornoch & Alness	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 NH7399 and the vertical and horizontal line divides the square into four quadrants

Dividing the NH7399 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. NH , 73 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 NH + 73 + 3 + 99 + 5 would give you the six figure grid reference of NH733995

NH	73		99
NH	73	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	57.962091	-4.148673	273000	899000
South East Corner	57.962091	-4.131248	274000	899000
North West Corner	57.971351	-4.148673	273000	900000
North East Corner	57.971351	-4.131248	274000	900000