Mechanical Log

Mechanical Log

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William Petit Trowbridge was an 1848 graduate of the U.S. Military Academy who, while employed by the U.S. Coast Survey, worked to develop improved methods for determining the speed of a ship and the distance to the sea bottom. This log came from Columbia University where Trowbridge served as professor of engineering in the years 1877-1892. Although the instrument is not signed, the box is marked "Ship’s Log and Sounding Instrument Combined. Devised by W. P. Trowbridge in 1863".
Currently not on view
Object Name
sounding instrument
overall: 7 1/8 in x 15 1/4 in x 7 1/2 in; 18.0975 cm x 38.735 cm x 19.05 cm
ID Number
catalog number
accession number
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Medicine and Science: Physical Sciences
Measuring & Mapping
Data Source
National Museum of American History
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