Astrolabe Catalogue

Throne, Ring and Shackle

The throne is of the indo-persian, engraved type made of brass attached with integrated base made of brass and has a simple, round cross-section ring made of brass and omega type shackle made of brass . More information

Mater

The mater and limb are of one-piece construction. The tab that keeps the tympans in place is located at the bottom of the instrument, 180° from the throne.. Scales on the limb: degree scale. More information

Back

The back contains 16 scales of the following types: Altitude; Declination; Azimuth of Qibla; Altitude of noon sun; Sine/Cosine; Cotangent; Terms; Zodiacal signs; Faces; Lunar Mansions; Shadow square; Triplicities. The back is inscribed: with a maker's signature marked as عبد العلي صنعه (‘Abd al-‘Ali made this). More information

Rete, Pin & Horse

The rete contains 0 stars. The rete is a replacement. The zodiac on the rete is labelled: حمل , ثور , جوزا , سرطان , اسد , سنبله , ميزان , عقرب , قوس , جدي , دلو , حوت .
The rete is attached using a pin & horse. The replacement pin and horse are presumably contemporary with the replacement rete. The horse (inventory no. 85861) is longer than usual so that it can hold the rete, which lacks the central section. More information

Plates

There are 4 plates with latitudes ranging from 22°0' to 39°0' . More information

Rules & Alidades

Type	Details
Alidade	Double-ended. The rule is not original. This is a replacement..

More information