The SZ0377 Square Kilometre

SZ0377 National Grid Square

Based in the South West English Region.

The SZ0377 square kilometre intersects with the settlement of Swanage.

SZ0377 is within the post town of Swanage, Dorset.

The square is within Dorset council.

The Point of Origin (0,0) is 410.29 Kilometres away. This is where the National Grid starts around 80 kilometres west of the Isles of Scilly.

Ordnance Survey Maps for SZ0377

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Map Series	link	Ordnance Survey
Explorer 1:25,000 ol15 Purbeck and South Dorset, Poole, Dorchester, Weymouth & Swanage	Shop for this map on amazon.co.uk	Buy Direct from the Ordnance Survey
Landranger 1:50,000 195 Bournemouth & Purbeck	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 SZ0377 and the vertical and horizontal line divides the square into four quadrants

Dividing the SZ0377 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. SZ , 03 and 77

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 SZ + 03 + 3 + 77 + 5 would give you the six figure grid reference of SZ033775

SZ	03		77
SZ	03	3	77	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	50.592704	-1.958971	403000	77000
South East Corner	50.592704	-1.944833	404000	77000
North West Corner	50.601702	-1.958971	403000	78000
North East Corner	50.601702	-1.944833	404000	78000