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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)
Selwyn Avenue (opposite No.2)
Distance (N) from Greenwich
OS map detailsOS Explorer: 174
OS grid refTQ 38490.91716
(538490,191716)
WGS84 lat/long51.607255, -0.001499
TypePavement (slab)
Marking date1963
AccessUnrestricted