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azimuth vane

См. также в других словарях:

  • azimuth circle — noun 1. : one of the great circles of the celestial sphere intersecting each other in the zenith and nadir called also vertical circle; compare meridian 2 2. : a horizontal graduated circle for indicating azimuth (as one having sight vanes and… …   Useful english dictionary

  • azimuth bar — a device used in measuring azimuths, consisting of a bar with a sighting vane at each end,pivoted at its center, and rotating in a horizontal plane around the center of a compass. * * * …   Universalium

  • azimuth circle — a device for measuring azimuths, consisting of a graduated ring equipped with a sighting vane on each side, which fits concentrically over a compass. [1585 95] * * * …   Universalium

  • azimuth circle — tool for measuring azimuths that comprises of a graduated ring having a sighting vane on each side that fits over a compass in a concentric manner …   English contemporary dictionary

  • azimuth bar — a device used in measuring azimuths, consisting of a bar with a sighting vane at each end,pivoted at its center, and rotating in a horizontal plane around the center of a compass …   Useful english dictionary

  • Elton's quadrant — An Elton s quadrant is a derivative of the Davis quadrant. It adds an index arm and artificial horizon to the instrument. It was invented by John Elton a sea captain who patentedhis design in 1728Bennett, Jim, Catadioptrics and commerce in… …   Wikipedia

  • MGM-31 Pershing — Pershing was a family of solid fueled two stage medium range ballistic missiles designed and built by Martin Marietta to replace the Redstone missile as the United States Army s primary theater level weapon. The Pershing systems lasted over 30… …   Wikipedia

  • Conical scanning — is a system used in early radar units to improve their accuracy, as well as making it easier to steer the antenna properly to point at a target. Conical scanning is similar in concept to the earlier lobe switching concept used on some of the… …   Wikipedia

  • Pfund telescope — The Pfund telescope, originated by A. H. Pfund, provides another method for achieving a fixed telescope focal point in space regardless of where the telescope line of sight is pointed. This configuration utilizes a two axis feed flat mirror to… …   Wikipedia

  • Glossary of nautical terms — This is a glossary of nautical terms; some remain current, many date from the 17th 19th century. See also Wiktionary s nautical terms, Category:Nautical terms, and Nautical metaphors in English. Contents: A B C D E F G H I J K L M N O P Q R …   Wikipedia

  • Weather radar — in Norman, Oklahoma with rainshaft …   Wikipedia

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