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Islamic horary quadrant

Object from: British Library on Flickr Commons.

Date: 1700-99  Place: Iran  (Accession num: 1918-261 Pt2)

So far people have added content in 4 turns about this object.


quadrant, gold, islamic, maths, sun, gold, numerical, set square, compass, mathematics, astrology, Iran, chart, 18th century

Headline: Quarter past then - telling the time in Persia

Summary: Horary is an archaic term meaning 'of or relating to hours'. The horary quadrant was used for finding local time by sighting either the Sun or a bright star at night. As this is an Islamic version of an horary quadrant, created in Persia/Iran, it may have been used to calculate prayer times. Further information may be discovered here: King, D. (1987), ‘Islamic Astronomical Instruments’, Variorum, London, repr. Aldershot: Variorum, 1995.
Source: http://www.ssplprints.com/image.php?imgref=10326181

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