Inyo FBV Broadband Force-Balance Vertical Seismometer

Some images taken during the construction of a FBV seismometer modelled on the design by David F. Nelson & Brett M. Nordgren. details can be found here.

http://bnordgren.org/seismo/gif_images.htm

Dave & Brett’s Live trace

Pressure case made from 10mm Plexiglass NO wires connected to seismometer