Tag: Goettingen 2024
Horizontal and vertical seismographs and vibration recorders Spindler & Hoyer, Göttingen Catalogue 28 [transcription] Astatic horizontal seismograph (No. 178 – 180) The seismograph is similar in principle to the often described so-called astatic seismograph of Prof. Dr. Wiechert, only the stationary mass is smaller, namely 80 or 125 or 200 kilos instead of 1000 kilos. […]