used in inland river. The echo sounder graphics is continuously shown on the 7 inch LCD along ... years of rigorous technological innovations to offer Inland River Echo Sounder. ISO9001 Quality System certified and CCS type approved.Ninglu(Skipper ... provider of marine equipments supplying a wide range of Echo Sounder, Fish Finder, Speed Log, Anemometer, NMEA Distributor, Repeaters, Navigation Monitor ...