Since 1956, PASI has been the professional point of reference for those working on the territory, and has needed to continuously expand its field of action as a result of new methods of investigation and reliable and complete monitoring solutions. For this reason, they now offer a full range of instruments and software for Geophysics, Geology, Environmental and Geotechnical Monitoring, Non-Destructive Testing and Structural Controls. Their experience and expertise are the result of the on-going development of the company, which has origins far back in time and space: the first PASI instruments originated in India in the 1940s, in the great laboratory at the Geophysical Survey in Calcutta, where Applied Geophysics took its first steps thanks to the talent of an Italian, a true pioneer of modern electronics. And it was India that also saw the start of PASI's international vocation, which - cultivated year after year - now enables to meet the needs of the global market, exporting all over the World - with pride and determination. They are manufacturer of Exploration Seismographs, Earth Resistivity Meters, Bore Well Cameras, Water Level indicators, Micro paleontology Slides etc.