https://peertube.dngr.us/videos/watch/88f3e764-a408-4d0c-a717-b8ebe180d5b3 Love our channel? Help us save and post more orphaned films! Support us on Patreon: https://www.patreon.com/PeriscopeFilm Even a really tiny contribution can make a difference. This black & white educational U.S. Navy Training Film is one of a series made to train lookouts. This one is about using the position angle system when reporting incoming aircraft. Copyright 1944. Opening: U.S. Navy Training Film - Position Angle (:06-:21). A sailor serving as a sky lookout uses his binoculars to scan for enemy planes. His job is to report incoming aircraft and their incoming bearing position angle so that the ship can be defended. A plane in the sky as seen through binoculars. Diagram with the line of sight and the horizon, the position angle, and zenith pointed out. The sky above you is a half circle divided by degrees. A plane entering that circle is shown (:22-1:40). A lookout uses an alidade, a sighting device or pointer for determining directions or measuring angles (often used in surveying and formerly astronomy). Diagram shows where the angle you should see the plane is. The diagram shows 'not here' versus 'here' as to where the plane should be sighted. 'Too late' also shows how a plane can evade detection and drop its bombs. A sky lookout uses binoculars and speaks to a telephone talker about the bogey's position angle. The telephone talker radios in the information, the other keeps his eyes on the enemy in the sky (1:41-2:49). End credits (2:50-2:58). Motion picture films don't last forever; many have already been lost or destroyed. We collect, scan and preserve 35mm, 16mm and 8mm movies -- including home movies, industrial films, and other non-fiction. If you have films you'd like to have scanned or donate to Periscope Film, we'd love to hear from you. Contact us via the link below. This film is part of the Periscope Film LLC archive, one of the largest historic military, transportation, and aviation stock footage collections in the USA. Entirely film backed, this material is available for licensing in 24p HD and 2k. For more information visit http://www.PeriscopeFilm.com Source: https://www.youtube.com/watch?v=hBDC-fHhqQA Mirrored from Periscope Film (https://www.youtube.com/@PeriscopeFilm) Sat, 13 Jun 2026 12:56:32 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://peertube.dngr.us https://peertube.dngr.us/lazy-static/avatars/41a6fee9-7f57-42d0-a5fc-5db4f1af2e31.png https://peertube.dngr.us/videos/watch/88f3e764-a408-4d0c-a717-b8ebe180d5b3 All rights reserved, unless otherwise specified in the terms specified at https://peertube.dngr.us/about and potential licenses granted by each content's rightholder.