A historic three-component portable seismograph based on the Quervain-Piccard system and manufactured by Trub, Tauber & Co., 1918-20. Photographed at Focus Terra, the Earth Science Research and Information Centre of ETH, the Swiss Federal Institute of Technology, Zurich. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Williamson, Mark |
Taille de l’image : | 3379 px × 5172 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |