Improvements in and related to polling devices and measures of distances by eco (Machine-translation by Google Translate, not legally binding)

摘要

Improvements in and relative to echo sounder and distance measurement apparatus, whose apparatus for measuring distances by echo comprises a transducer of said distance measurement mounted rotationally about a vertical axis and a transmitter arranged to feed oscillating electric power pulses to the transducer, characterized by having means for rotating the transducer (22) around said axis in steps, the movements taking place between successive pulses. (Machine-translation by Google Translate, not legally binding)