To give a grid reference to the nearest 100 metres using the Irish Grid System. |
This example is to the Gillespie Monument in the town square Comber.
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Give the letter identifying the map. This map is "J" |
J |
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First quote the EASTINGS. Locate the VERTICAL grid line to the LEFT of the point
and read the LARGE figures labelling the line either in the top or bottom margin of the line itself.
ALONG THE HALL |
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46 |
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Estimate in TENTHS from this grid line to the point. It is close enough to call it zero. |
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0 |
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Next quote the NORTHINGS.
Locate the HORIZONTAL grid line BELOW the point and read
the LARGE figures labelling the line either in the left or right margins.
UP THE STAIRS |
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69 |
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Estimate in TENTHS from this grid line to the point. |
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2 |
The full 100 metre reference to the monument is:-- |
J | 46 | 0 |
69 | 2 |