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Royal Observatory Greenwich
Latitude and Longitude
Airy Transit Circle (ATC)
WGS84 and the Greenwich Meridian
The Greenwich Meridian before the ATC
The Quest for Longitude
International Meridian Conference (1884)
Meridian Day (1984)
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Telescopes used with Meridian Marks
 
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LocationEngland
Essex
Waltham Abbey
S side of: Greenfield Street
Distance (N) from Greenwich
OS map detailsOS Explorer: 174
OS grid refTL 38251.00285
(538251,200285)
WGS84 lat/long51.684313, -0.001564
TypePlaque (wall)
Marking date1984
AccessNone