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pl23_theb4086.jpg

Engraving soundings on a copper plate with a machine

Image

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Permalink

https://www.noaa.gov/media/digital-library-photo/pl23theb4086jpg-0

Description

Engraving soundings on a copper plate with a machine.In: Putnam, G.R. 1908. Nautical Charts. J. Wiley and Sons, New York.

Collection

Historic Coast & Geodetic Survey