pl23_ship4238.jpg
![Figure 36 ship4238.jpg Figure 36](https://s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_ship4238.jpg)
Description
Figure 36. Ericsson pneumatic sounder, invented in 1835 by John Ericsson of USS MONITOR fame. This was among the first instruments to use the principle ofpressure needed to compress air a given amount to derive the depth of water.
Credit
Oceanographic Museum of Monaco
Photographer
Y. Berard
Category
Voyage to Inner Space
History of Oceanography Collection
The Early Instruments - Collections of the Oceanographic Museum at Monaco
Sounding Instruments
Keywords
Oceanography
Historical instruments