| Location | England LB Greenwich Greenwich (SE10) |
| Royal Observatory (south side of Meridian Building) | |
| Distance (S) from Greenwich | |
| OS map details | OS Explorer: 162 or 162 |
| OS grid ref | TQ 38883.77315 (538883,177315) |
| WGS84 lat/long | 51.477752, -0.001505 |
| Type | Ground (line) | Wall (line) | Sign on post(s) | Plaque (wall) |
| Marking date | c. 1967 & later |
| Access | Restricted (charged entry) |
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