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![Pole signal with tin cone for reflecting sunlight theb2457.jpg Pole signal with tin cone for reflecting sunlight](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_theb2457.jpg?itok=AodY3yGf)
Description
Pole signal with tin cone for reflecting sunlight.Constructed by survey crews under direction of Ferdinand Hassler.Sketch by Assistant John Farley - view looking to south across Long Island Sound (Image credit: NOAA John Farley collection)
Credit
NOAA John Farley collection
Display Date
1837
Location
Connecticut shore
Collection
Historic Coast & Geodetic Survey
Geodesy
Triangulation
Wooden Towers & Signal Poles
Keywords
Geodesy
Triangulation
Towers
Wooden