Design and Construction of three kinds of astronomical quadrant in one instrument by Iraj Safaei, head of University of Kashan Observatory

20 November 2010 | 00:00 Code : 7924 Old astronomical instruments
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He has designed three kinds of quadrant in one instrument. Horary quadrant, sine quadrant & astrolabe quadrant. And he has made it from brass.

tags: astrolabe quadrant


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