Theodolite. Historical artwork of a theodolite designed by Jesse Ramsden (1735-1800) in 1787 for the Royal Society. A theodolite is used to measure horizontal and vertical angles. Here there are two telescopes: the one at top centre for vertical angles and the one at centre left for horizontal ones. Accurate triangulation for map making was made possible by its use | |
Licence : | Droits gérés |
Crédit: | Science Photo Library |
Taille de l’image : | 2610 px × 3646 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |