Tide indicator mechanism of the tide indicator at the Maritime Exchange at Philadelphia.
Image ID: cgs01627, NOAA's Historic Coast & Geodetic Survey (C&GS) Collection Location: Pennsylvania, Philadelphia Photo Date: 1902 • High Resolution Photo Available
Publication of the U.S. Department of Commerce, National Oceanic & Atmospheric Adminstration (NOAA), NOAA Central Library NOAA Privacy Policy | NOAA Disclaimer Last Updated: April 30, 2013