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#Mon Aug 09 11:50:40 CEST 2010
Text__aqwoUKObEd-WfYQ0GneCwQ_text=<p>Before the invention of the telescope, the quadrant is the most important measuring instrument for astronomical observations. Its primary purpose is to determine altitudes, but geometricians use it to determine other kinds of angles as well.</p>
Text__aqwoUKObEd-WfYQ0GneCwQ_title=Quadrant