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![Title page to manual - The Submarine Fathometer theb2148.jpg Title page to manual - The Submarine Fathometer](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_theb2148.jpg?itok=D7Gg9Yzd)
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