Separate for the observation of reflective objects by ecometry (Machine-translation by Google Translate, not legally binding)

摘要

Apparatus for observation of reflective objects by ecometrºa, characterized by the use of an ultrasound with register of amplitudes, which serves both to record strong background echoes, and also for the registration of weak echoes from schools of fish, and a cathode ray tube for the simultaneous indication of the shape of the echoes, in such a way that the time base of the graphic stylet and the cathode rays is controlled by an electric motor and that the beginning of the time bases in relation with the emission of sounds it can be adjusted independently for the stylet and for the cathode ray, with which simultaneous readings are obtained but with different characteristics. (Machine-translation by Google Translate, not legally binding)