Geokon designs and manufactures a full range of high-quality geotechnical instrumentation suitable for monitoring the safety and stability of civil engineering structures including tunnels, mines, embankments, foundations, pipelines, piles, dams, and storage facilities. Tunnel-specific instruments include NATM-style concrete pressure cells, convergence meters, multiple-point extensometers, instrumented rockbolts, and tape extensometers. Please visit www.geokon.com/Tunnels or contact us for further information.