FIELD: hydroacoustics.
SUBSTANCE: device has power source, receiving device, device for forming probing pulses, device for control and synchronization, indicator and antenna, and also has receipt converters commutator and indicator element commutator, antenna has emitter of acoustic pulses and three receipt converters, indicator has three columns of vertically positioned indication elements.
EFFECT: higher precision, higher efficiency.
2 cl, 2 dwg
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