Inventory no. 36247 - Former Display Label
49
Persian ASTROLABE
c.1710
Signed, in a cartouche below the shadow-square, 'Made by `Abd al-Ali; undated. Brass.
`Ankabût for c.26 fixed stars; the centre of the `ankabût is missing. 4 plates, for latitudes 22°, 24°; 27°, 30°; 32°, 34°; 36° and 39°. One plate may be a replacement. The umm is engraved as a gazeteer of the longitude, latitude, inhirâf, jiha, and masâfa of 27 places.
On the back there are scales of degrees and cotangents; a sine graph; the arcs of the signs of the zodiac with graphs of the sun's meridian altitude for latitudes 28°-36°, at intervals of 2° and of azimuths of the Qibla for Qazvîn, Isfahan, Yazd, oûs and ?Shîrâz; a shadow-square, within which is a table of triplicities; and an astrological table of the signs of the zodiac, the terms and faces of the planets and the mansions of the moon. The alidade, horse and pin are replacements.
Formerly in the Michel Collection
[57-84/11; Mayer-`Abd al-`Alî V]
Billmeir Collection