Attention, not all the seismic signals on the daily Drum of the historical seismograph by Raffaele Bendandi can be compared to real seismic waves. The 400Kg seismograph has remained in its original place, now a museum, and visitors, observing it closely, create involuntary oscillations with their trampling on the floor. Therefore if you want to verify the real presence of seismic waves it is necessary to observe if also other seismographs, for long distances, are recording the same oscillations.
Novara geophysical observatory association
Novara (NO) 45°25'07.4"N 8°36'48.5"E__Battaglia di Campli (TE) 42°42'42.6"N 13°38'11.9"E__________________Nepi (VT)____________