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The Info List - Irish Grid Reference System



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The IRISH GRID REFERENCE SYSTEM is a system of geographic grid references commonly used in Ireland
Ireland
(both Northern Ireland
Ireland
and the Republic of Ireland
Ireland
). The Irish grid lies within the British grid , but uses a different co-ordinate system with a meridian more suited to the westerly location.

CONTENTS

* 1 Usage * 2 Grid letters * 3 Eastings and northings * 4 Summary parameters of the Irish Grid coordinate system * 5 Notes * 6 References * 7 External links

USAGE

In general, neither Ireland
Ireland
nor Great Britain
Great Britain
uses latitude or longitude in describing internal geographic locations. Instead grid reference systems are in common usage.

The national grid referencing system was devised by the Ordnance Survey , and is heavily used in their survey data, and in maps (whether published by the Ordnance Survey of Ireland
Ireland
, the Ordnance Survey of Northern Ireland
Ireland
or commercial map producers) based on those surveys. Additionally grid references are commonly quoted in other publications and data sources, such as guide books or government planning documents.

The Ordnance Survey of Ireland
Ireland
has implemented a new coordinate system for