Aviation aux Etats-Unis : amélioration technologique et sécurité, 1930-1939. - 24 photos - Photo n° 228648
Photo n°
228648
:
WATCH YOUR CREDIT LINE: PHOTO FROM WIDE WORLD PHOTOS: WASHINGTON …….BUREAU: 718352-THE LATEST METHOD OF DETERMINE THE DIRECTION OF THE WIND. WASH., D.C.-Anew type wind direction indicator is being tested at Bolling Field, Wash. It is in the shape of a dirigible floating from a steel mooring mast and is visible from a great distance either by day or night. It is 17 feet long and three in Diameter. Private H. E. Smith is shown with the device. D-12-30-30. [Actualit] [Wide World Photos]