Sounding device made by William P

Sounding device made by William P. Trowbridge for Coast Survey. Line would pay out of a descending cylinder and stationery cylinder on deck. Similar to modern bathythermograph copper wire instrument. Civil War intervened stopping research. Probably would have worked

Photo Category: Charting - Soundings - Bathymetry - Mechanical
Photo Date: 1860

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Author: NOAA Central Library/ NOAA

License: Public Domain Mark 1.0 (Public domain)

Small	468 x 640	59.50 KB
Original	1072 x 1468	452.26 KB

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Added On	19th October 2015
Viewed	7 viewed
Downloads	1 Downloaded