The TR3157 Square Kilometre

TR3157 National Grid Square

Based in the South East English Region.

The TR3157 square kilometre intersects with the settlements of Sandwich & Woodnesborough.

TR3157 is within the post town of Sandwich, Kent.

The square is within Dover District council.

The Point of Origin (0,0) is 650.24 Kilometres away. This is where the National Grid starts around 80 kilometres west of the Isles of Scilly.

Ordnance Survey Maps for TR3157

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Map Series	link	Ordnance Survey
Explorer 1:25,000 150 Canterbury and the Isle of Thanet	Shop for this map on amazon.co.uk	Buy Direct from the Ordnance Survey
Landranger 1:50,000 179 Canterbury & East Kent	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 TR3157 and the vertical and horizontal line divides the square into four quadrants

Dividing the TR3157 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. TR , 31 and 57

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 TR + 31 + 3 + 57 + 5 would give you the six figure grid reference of TR313575

TR	31		57
TR	31	3	57	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	51.264919	1.309889	631000	157000
South East Corner	51.264919	1.324846	632000	157000
North West Corner	51.274302	1.309889	631000	158000
North East Corner	51.274302	1.324846	632000	158000