Title: Astrolabe of ‘Umar ibn Yusuf ibn ‘Umar ibn ‘Ali ibn Rasul al-Muzaffari
Object type: Astrolabe
Date: dated 690 AH/1291 CE
Artist:  ‘Umar ibn Yusuf ibn ‘Umar ibn ‘Ali ibn Rasul al-Muzaffari 
Artist bio: Yemini, ruled 1295–96
Artist nationality: Yemini
Artist role: Maker
Medium: Brass; cast and hammered, pierced, chased, inlaid with silver
Dimensions: Case (a): Max. W. 7 5/8 in. (19.4 cm)
                Diam. 6 1/8 in. (15.6 cm)
                D. 1/4 in. (0.6 cm)
Bar with attached nail (b):  Max. H. 1 7/8 in. (4.8 cm)
                                               Max. W. 1 1/8 in. (2.9 cm)
                                               L. 5 in. (12.7 cm)
Net (c): Diam. 5 in. (12.7 cm)
Plates (d-g): Diam. 5 in. (12.7 cm)
Pin (h): L. 1 3/4 in. (4.4 cm)
             W. 1/2 in. (1.3 cm)
Classification: Metal
Credit line: Edward C. Moore Collection, Bequest of Edward C. Moore, 1891
Geography: Made in    Yemen      
Department: Islamic Art
Repository: Metropolitan Museum of Art, New York, NY
Tags: term: Astronomy