Binocle

Category:	Security
Title:	Binocle
Listing URL:	http://www.binocle.info/
Description:	Almost from the invention of the telescope in the 17th century the advantages of mounting two of them side by side for binocular vision seems to have been explored. Most early binoculars used Galilean optics; that is they used a convex objective and a concave
Clicks:	0
Link added:	Feb 14, 2008

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