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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
Walthamstow (E17)
Thorpe Hall Road, E17 (at side of No.115 Hale End Road)
Distance (N) from Greenwich
OS map detailsOS Explorer: 174
OS grid refTQ 38518.90584
(538518,190584)
WGS84 lat/long51.597076, -0.001541
TypePavement (compass rose)
Marking date1999
AccessUnrestricted. Mark no longer present