Early Ordnance Survey stations. Diagrams of some of the triangulations stations (including Greenwich Royal Observatory and Dover Castle) used in the 1784-1796 surveys of England and Wales. The stations (usually church towers or castles) formed connected triangles (see C009/5094),and measuring the angles between them allowed accurate maps to be constructed. This work was first published in Philosophical Transactions of the Royal Society,then later in volume one of a 1799 report by Mudge and Dalby for the government's Board of Ordnance. This would eventually form the basis of the UK national mapping agency,the Ordnance Survey | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Royal Astronomical Society |
Bildgröße: | 5870 px × 3046 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |