Astrolabe Catalogue


Front of astrolabe without rete or plates. Click to enlarge
Date 1713/4
Maker ‘Abdī
Place Turkey
Material Brass
Inventory no. 39955
Acquisition Presented by J. A. Billmeir in 1957


The throne is of the indo-persian, broad type . The throne is attached with a integrated base. The front of this throne is undecorated except for a vertical line at the center. The back of the throne bears the maker's inscription.. Markings:
Content Translation Notes Type
رسمه عبدي ‘Abdī designed this Maker's signature


The ring is of the simple, round cross-section type (i.e. simple plain ring made from a round rod or piece of metal). Visible line at the joint.


Shackle of the other type (i.e. unusual or unique shackle). Teardrop-shaped shackle attaches to the throne by a pin that passes through two teardrop-shaped tabs..


The mater and limb are of two pieces, soldered and riveted construction. In the center of the limb is a ring of dots, probably used as a guide for inscribing the numerals on the limb. The rivets that hold the backplate to the limb can be seen approximately every 15° around the limb.. Scales on the limb:
Type Range & Units Numbered Geometry Location
Degree 0 - 360 Degrees of arc Every 10 degrees Circular, concentric None


The womb is devoid of any content..
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