Figure 10. Bulldog sounder, invented by Marine Engineer Roughton,assistant engineer Steil, and naturalist George C. Wallich for use in deep water sounding operations by HMS BULLDOG in the North Sea and North Atlantic Ocean in 1860 while under command
4/4/2019 2:12:18 PM
Photographer: Y. Berard
Credit: Oceanographic Museum of Monaco
Subject: Oceanography
Subject: Historical instruments