An anemometer on the roof of the solar heating demonstration project. The device measures wind velocity, 05/1975.

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Photo credit: © PF-(usna) / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: .., agency, archives, boyd, boydnorton, documerica, environmental, environmentalprotectionagency, historic, history, nara:arcid=557310, national, norton, protection, usa, usnationalarchives