pl23_theb2457.jpg
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
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