The seismometers from the old station are found in two rooms. The heaviest ones have been left in their previous positions. The numbering follows technological evolution from the oldest seismometer, the Rebeur-Ehlert which dates from 1895 and is one of the very first seismometers in the world, to seismometers from the 1950s.
Here under is a brief view of some instruments of the collection. However, if you want to know how they work, just select them within the list on the left.