quadrant (technology)

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quadrant

quadrant in technology, angle-measuring device based on a scale of 90°. It is sometimes confused with the sextant , a similar instrument based on a scale of 60°. The quadrant is rarely used today.

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"quadrant." The Columbia Encyclopedia, Sixth Edition. 2008. Encyclopedia.com. 8 Nov. 2009 <http://www.encyclopedia.com>.

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quadrant

A Dictionary of Astronomy | 1997 | Â© A Dictionary of Astronomy 1997, originally published by Oxford University Press 1997. (Hide copyright information) Copyright

quadrant An obsolete navigational instrument used for measuring angles. It consisted of an engraved arc of a quarter of a circle, with a plumb line suspended from the centre of the circle. Stars were sighted along one arm and their elevation was read off the scale against the plumb line.

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quadrant

The Oxford Essential Dictionary of the U.S. Military | 2001 | Â© The Oxford Essential Dictionary of the U.S. Military 2001, originally published by Oxford University Press 2001. (Hide copyright information) Copyright

quadrant ˈkwädrənt n.
1. an instrument used for taking angular measurements of altitude in astronomy and navigation, typically consisting of a graduated quarter circle and a sighting mechanism.

2. a frame fixed to the head of a ship's rudder, to which the steering mechanism is attached.

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