The TF1249 Square Kilometre

TF1249 National Grid Square

Based in the East Midlands English Region.

TF1249 is within the post town of Sleaford, Lincolnshire.

The square is within North Kesteven District council.

The Point of Origin (0,0) is 619.63 Kilometres away. This is where the National Grid starts around 80 kilometres west of the Isles of Scilly.

Ordnance Survey Maps for TF1249

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Map Series	link	Ordnance Survey
Explorer 1:25,000 261 Boston	Shop for this map on amazon.co.uk	Buy Direct from the Ordnance Survey
Landranger 1:50,000 121 Lincoln	Shop for this map on amazon.co.uk
Landranger 1:50,000 130 Grantham	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 TF1249 and the vertical and horizontal line divides the square into four quadrants

Dividing the TF1249 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 , 12 and 49

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 + 12 + 3 + 49 + 5 would give you the six figure grid reference of TF123495

TF	12		49
TF	12	3	49	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	53.026390	-0.331510	512000	349000
South East Corner	53.026390	-0.316257	513000	349000
North West Corner	53.035585	-0.331510	512000	350000
North East Corner	53.035585	-0.316257	513000	350000