Figure 52. Thoulet sounder devised by Professor Julien Thoulet of the University of Nancy in 1908. This was a modification of the Belloc sounder that Professor Thoulet wished to make more portable and to have a lower cost. No informationis availabl
4/4/2019 2:12:24 PM
Photographer: Y. Berard
Credit: Oceanographic Museum of Monaco
Subject: Oceanography
Subject: Historical instruments