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				<title><![CDATA[Quintant Sextant or Lattice Sextant]]></title>
				<link>http://gallery.usgs.gov/photos/07_22_2009_j51Qi76Hgb_07_22_2009_17</link>
				<media:description><![CDATA[This instrument was manufactured by Spencer, Browning & Rust, London. A sextant is used for measuring the altitude of the sun or another celestial body; such measurements can then be used to determine the observer's geographical position or for other navigational, surveying, or astronomical applications. Dating from the 1820s-1850s, this instrument is among the earliest objects in the U.S. Geological Survey museum collection.
Object ID: USGS-000220]]></media:description>
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