The NZ4618 Square Kilometre

NZ4618 National Grid Square

Based in the North East English Region.

The NZ4618 square kilometre intersects with the settlements of Stockton-on-Tees & Thornaby-on-Tees.

NZ4618 is within the post towns of Middlesbrough, Yorkshire & Stockton-on-tees, County Durham.

The square is within Middlesbrough & Stockton-on-Tees councils.

The Point of Origin (0,0) is 683.55 Kilometres away. This is where the National Grid starts around 80 kilometres west of the Isles of Scilly.

Ordnance Survey Maps for NZ4618

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Map Series	link	Ordnance Survey
Explorer 1:25,000 306 Middlesbrough and Hartlepool, Stockton-on-Tees and Redcar	Shop for this map on amazon.co.uk
Landranger 1:50,000 93 Middlesbrough	Shop for this map on amazon.co.uk

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 NZ4618 and the vertical and horizontal line divides the square into four quadrants

Dividing the NZ4618 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. NZ , 46 and 18

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 NZ + 46 + 3 + 18 + 5 would give you the six figure grid reference of NZ463185

NZ	46		18
NZ	46	3	18	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	54.555081	-1.290285	446000	518000
South East Corner	54.555081	-1.274666	447000	518000
North West Corner	54.564159	-1.290285	446000	519000
North East Corner	54.564159	-1.274666	447000	519000