Supply of instrumentation, consisting of tiltmetric well sensors, and construction of installation sites, necessary for the strengthening of the tiltmetric network relating to variations in soil inclination for monitoring and surveillance of active volcanoes in the Neapolitan area, divided into n. 2 lots

Lot 1 – Supply concerning n. 3 high-resolution digital tiltmetric sensors from wells

Lot 2 – Works concerning n. 8 wells