Image: Sounding leads
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Original image (901 × 486 pixels, file size: 112 KB, MIME type: image/jpeg)
Description: A sounding pole
Title: Sounding leads
Credit: Lea, Samuel Hill (1905) Hydrographic Surveying. Methods, Tables and Forms of Notes. New York: The Engineering News Publishing Co.
Author: Samuel Hill Lea
Permission: Public domain works must be out of copyright in both the United States and in the source country of the work in order to be hosted on the Commons. If the work is not a U.S. work, the file must have an additional copyright tag indicating the copyright status in the source country. PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:Sounding_leads.jpg
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
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