| Location | England LB Greenwich Greenwich (SE10) |
| Royal Observatory (south side of Meridian Building, on Bradley Meridian) | |
| Distance (S) from Greenwich | |
| OS map details | OS Explorer: 162 or 162 |
| OS grid ref | TQ 38877.77320 (538877,177320) |
| WGS84 lat/long | 51.477799, -0.001590 |
| Type | Plaque (wall) | Wall (line) |
| Marking date | c. 1967 |
| Access | Restricted (charged entry) |
The metal strip on the wall was removed c.2008.