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![Ferrel Tide prediction machine theb4101.jpg Ferrel Tide prediction machine](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_theb4101.jpg?itok=jJJODl7v)
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Ferrel Tide prediction machine. Tide Predicting Machine No. 1 of the Coast andGeodetic Survey.
Collection
Historic Coast & Geodetic Survey