Fuji Listening stick is the Oldest but extremely effective at Leak Surveying.

Individual service connection survey is widely practiced by Japanese Non–revenue water specialists. An optimum designed resonance chamber amplifies the leakage noise from various kinds of pipe materials.

Fuji Listening stick is the simplest and useful device. LS–1.5m, LS–1.0m, Separable Type (30cm) is available.