The analog-to-digital recorder (ADR) tide gauge used by NOAA from the mid-1960s to the mid-1990s.
Revised
February 01, 2007
| Questions, Comments? Contact Us | Report Error On This Page | Disclaimer | About the Site
National Oceanic and Atmospheric Administration | U.S. Department of Commerce
http://celebrating200years.noaa.gov/magazine/tide_observer/image3.html
National Oceanic and Atmospheric Administration | U.S. Department of Commerce
http://celebrating200years.noaa.gov/magazine/tide_observer/image3.html