The VonRoll Hydro Terralog Ground Microphone is a fittings and ground microphone with excellent measuring capabilities for acoustic leak detection in pressurised water pipes. The highly sensitive vibraphone can be connected by cable and is used to measure structure-borne sound on fittings, hydrants and house service connections, as well as ground-borne sound on a wide variety of terrains. The VonRoll Hydro Terralog Ground Microphone enables effective localisation of the leak site at the pre-location stage up until its exact location can be pinpointed.