An early clay mark used by the Survey of the Coast. This mark was placed at a survey point near Tom Nevers Head, Nantucket Island, Massachusetts, in 1887 underneath a stone monument on the surface.
High resolution available. (540 kb, 2048x1536).
Revised
December 12, 2006
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National Oceanic and Atmospheric Administration | U.S. Department of Commerce
http://celebrating200years.noaa.gov/survey_marks/clay_pot.html
National Oceanic and Atmospheric Administration | U.S. Department of Commerce
http://celebrating200years.noaa.gov/survey_marks/clay_pot.html