USGS Multimedia Gallery
Spencer
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As thumbs: <iframe id="photothumbs" name="photothumbs" height="420" width="600" frameborder="0" scrolling="auto" title="Spencer" src="http://gallery.usgs.gov/photo_shares/thumbs/tags/Spencer/">[This content is contained within an inline frame. You can also <a href="http://gallery.usgs.gov/photo_shares/thumbs/tags/Spencer/">access it directly</a>.]</iframe> As a list:<iframe id="photolist" name="photolist" height="420" width="600" frameborder="0" scrolling="auto" title="Spencer" src="http://gallery.usgs.gov/photo_shares/list/tags/Spencer/">[This content is contained within an inline frame. You can also <a href="http://gallery.usgs.gov/photo_shares/list/tags/Spencer/">access it directly</a>.]</iframe>
Quintant Sextant or Lattice Sextant
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 applicat... 
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U.S. Department of the Interior |
U.S. Geological Survey
URL: http://www.usgs.gov/tags/default.asp?tag=Spencerlistas=listp=_CurPage=1
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Page Last Modified: Wednesday, January 09, 2013
