MARK WILLIAMSON / SCIENCE PHOTO LIBRARY MARK WILLIAMSON / SCIENCE PHOTO LIBRARY
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.
Model release not required. Property release not required.