Astrolabe Catalogue

 

Front of astrolabe without rete or plates. Click to enlarge
Date 1505/06 (A.H. 911)
Maker Muḥammad Ṣaffār
Place Persia
Material Brass
Inventory no. 51182
Acquisition Presented by J. A. Billmeir in 1957

Throne

The throne is of the simple, engraved type . The throne is attached with a integrated base. The front bears only a vertical line down the centre. The back bears an inscription. Markings:
Content Translation Notes Type
قد فرغ من صنعة It has completed the making Maker's signature


Ring

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

Shackle

Shackle of the omega type (i.e. Ω-shaped shackle). .

Mater

The mater and limb are of one-piece construction. The plates are held in place by a post located on the meridian line, just above the bottom of the instrument. Scales on the limb:
Type Range & Units Numbered Geometry Location
Degree 0 - 360 Degrees Every 5 degrees Circular, concentric None

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