An image of Signal Corps apparatus from World War One showing a pinned 200-watt fan. The apparatus, numbered 36,439, was used for communication and signaling purposes during the war. The fan played a role in supporting the functioning of the apparatus.

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Size: 8862px × 5834px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 111-sc-36439, 200, activities, american, appara, apparatus, army, artifacts, communication, communications, corps, devices, documentation, equipment, fan, historical, history, military, photo, photographs, photography, pinaud, records, signal, signaling, soldiers, symbol, systems, technology, vintage, war, wartime, watt, world