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Using theNational Grid
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6560 61 62 63 6964 66 67 68
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4040TL
TL TL
TL
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Diagram C
TL63
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50 1 2 3 4 6 7 8
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rth
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eastings
TL63
Diagram B
TL
south-westcorner
Diagram A
SZ
NZNYNXNW
NUNTNSNR
NONNNMNL
NKNHNGNF
NDNCNBNA
NJ
TQ
SM TL TMSN SPSO
TFSKSJSH
TASESDSC
SR SS SUST TR
SV TVSW
HP
SYSX
TG
HZHYHXHW
HUHT
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On Ordnance Survey maps these squares are further divided into smaller squares by grid lines representing 10 kilometre spacing, each numbered from 0 to 9 from the south-west corner, in an easterly (left to right) and northerly (upwards) direction, as shown in diagram B.
Great Britain is covered by 100 kilometre grid squares, each grid square is identified by two letters, as shown in diagram A.
The National Grid provides a unique reference system, which can be applied to all Ordnance Survey maps of Grea t Britain, at all scales.
Using this system you can identify a 10 kilometre grid square. For example, here is TL63. After the letters you quote the eastings (6) first, then the northings (3).
If you have trouble remembering, say...
On OS Landranger Maps you can find the two grid letters TL on the legend, or on the corner of the map, and the grid has been further divided into 1 kilometre intervals, as shown in diagram C. You can estimate distances between the grid lines to give a more precise reference.
Turn the page and see how easy it is to use a 6-figure grid reference to pinpoint a place on the map...
Stairs the UpAlong the hall, THEN
The 6-figure grid referenceUsing the National Grid continued
Map extract from OS Landranger Map Sheet 154.
Diagram D
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6560 61 62 63 6964 66 67 68
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4040TL
TL TL
TL
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7 tenths
3 tenths
south-west corner
TL63
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The Church at TL683365The Windmill at TL726350Mill Farm at TL701352
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Ordnance Survey, the OS Symbol are registered trademarks and OS is a trademark of Ordnance Survey, the national mapping agency of Great Britain. and Landranger
Published by Ordnance Survey, Romsey Road, SOUTHAMPTON, SO16 4GU.
© Crown copyrightOPT 46895 0203
67 68 69 70 71 72 73
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By estimating the eastings and northings to one tenth of the grid interval, you can specify a full 6-figure grid reference, accurate to within 100 metres on the ground.
All you do is estimate how many tenths away from the grid your point falls. For instance, the point in diagram D is 3 tenths east of g rid 62 and 7 tenths north of grid 31.
Once again, reading from the south-west corner, quote all the eastings first, then the northings. The 100-metre grid reference of the point in the diagram is shown like this: TL 623317.
Here is an extract from a 1:50 000 scale map. Use the National Grid reference system to find:
The 6-figure grid reference is very useful to locate a particular place on a map.
Customer Contact Centre: 08456 05 05 05 (calls charged at local rate)We also have a dedicated Welsh language HelpLine. Phone: 08456 05 05 04Textphone: 023 8079 2906 (hearing impaired users only please) Fax: 023 8079 2615Email: [email protected]. Email: [email protected] Web site: www.ordnancesurvey.co.uk
