Figure 60. Joe Soundings sounder. This device was described in nauticalmagazine in 1832 by an individual with the pen name Joe Soundings. It used acounter incremented by a propeller to measure the distance to the bottom. It is similar to the Mass
4/4/2019 2:12:25 PM
Photographer: Y. Berard
Credit: Oceanographic Museum of Monaco
Subject: Oceanography
Subject: Historical instruments