pl23_theb2148.jpg
![Title page to manual - The Submarine Fathometer theb2148.jpg Title page to manual - The Submarine Fathometer](https://s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_theb2148.jpg)
Description
Title page to manual - The Submarine Fathometer.Fathometer invented by Herbert Grove Dorsey of the Sub Signal Corporation.
Collection
Historic Coast & Geodetic Survey
Nautical Charting
Soundings
Acoustic Sound Systems
Keywords
Charting
Soundings
Electronic