New Instrument to Revolutionize Marine Surveying -- Records Depth of Water Under Ship at Rate of 23 Soundings per Minute. The Fathometer -- the new instrument installed on the bridge of the Leviathan to record the depth of water under the ship, from 2 fathoms to 130 fathoms at the average rate of 23 soundings per minute. It is guaranteed to be correct to within a few inches.

Underwood & Underwood · [ca. 1910–1950]

[Information from item housing] Inventions