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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
LB Waltham Forest
Chingford (E4)
New Road (opposite Mead Crescent)
Distance (N) from Greenwich
OS map detailsOS Explorer: 174
OS grid refTQ 38453.92982
(538453,192982)
WGS84 lat/long51.618640, -0.001533
TypePavement (slab)
Marking date1984
AccessUnrestricted