The TF9231 Square Kilometre

TF9231 National Grid Square

Based in the Eastern English Region.

TF9231 is within the post town of Fakenham, Norfolk.

The square is within North Norfolk District council.

The Point of Origin (0,0) is 678.25 Kilometres away. This is where the National Grid starts around 80 kilometres west of the Isles of Scilly.

Ordnance Survey Maps for TF9231

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Map Series	link	Ordnance Survey
Explorer 1:25,000 251 Norfolk Coast Central	Shop for this map on amazon.co.uk	Buy Direct from the Ordnance Survey
Landranger 1:50,000 132 North West Norfolk	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 TF9231 and the vertical and horizontal line divides the square into four quadrants

Dividing the TF9231 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. TF , 92 and 31

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 TF + 92 + 3 + 31 + 5 would give you the six figure grid reference of TF923315

TF	92		31
TF	92	3	31	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	52.841945	0.849388	592000	331000
South East Corner	52.841945	0.864807	593000	331000
North West Corner	52.851280	0.849388	592000	332000
North East Corner	52.851280	0.864807	593000	332000