The NH0421 Square Kilometre

NH0421 National Grid Square

Based in the Highlands and Islands region of Scotland.

NH0421 is within the post towns of Beauly, Inverness-shire & Kyle, Ross-shire.

The square is within Highland council.

The Point of Origin (0,0) is 845.97 Kilometres away. This is where the National Grid starts around 80 kilometres west of the Isles of Scilly.

Ordnance Survey Maps for NH0421

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Map Series	link	Ordnance Survey
Explorer 1:25,000 414 Glen Shiel and Kintail Forest		Buy Direct from the Ordnance Survey
Landranger 1:50,000 25 Glen Carron	Shop for this map on amazon.co.uk	Buy Direct from the Ordnance Survey
Landranger 1:50,000 33 Loch Alsh & Glen Shiel

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 NH0421 and the vertical and horizontal line divides the square into four quadrants

Dividing the NH0421 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 , 04 and 21

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 + 04 + 3 + 21 + 5 would give you the six figure grid reference of NH043215

NH	04		21
NH	04	3	21	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	57.237586	-5.250220	204000	821000
South East Corner	57.237586	-5.232890	205000	821000
North West Corner	57.246981	-5.250220	204000	822000
North East Corner	57.246981	-5.232890	205000	822000