PASI equipment and software is the professional choice for anyone active in geology, geophysics, environmental and geotechnical monitoring, non-destructive testing and structural controls and borehole seismic investigation. PASI instruments have been giving reliable service to geologists since 1956 and as technology has developed, so has PASI, keeping pace with developments and answering the requirements of geophysicists and environmental engineers all over the world - reliable, thorough monitoring at affordable and competitive prices. With markets in Europe, the Middle East, Asia and Africa, PASI instruments have been proved in some of the most hostile and challenging environments in the world; with our attention to detail and a close working relationship with our clients, PASI instruments have proved to be the natural choice of professionals the world over.