Astronomical Clock, US Naval Observatory

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Astronomical clock at the United States Naval observatory, Washington.

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Size: 2793px × 3921px
Photo credit: © Photo Researchers / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: america, american, astronomical, astronomy, clock, clockwork, colorized, dc, enhancement, historical, history, instrument, measurement, naval, navy, observatory, states, technological, technology, time, united, usa, washington