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 to hold the tympans in place is located at the bottom of the instrument, 180° from the throne.. Scales on the limb: degree scale.

The limb is inscribed: with a marked as [on edge]. [ pending ]. 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 serial number marked as عمل رابع عشرون (Opus twenty-four). At bottom edge. with a maker's signature marked as عبد الائمة (ʿAbd al-Aʾimmah). In cartouche. More information

Rete, Nut & Bolt

The rete contains 0 stars. 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 nut & bolt. Simple, recent replacement.. More information

Plates

There are 4 plates with latitudes ranging from 29°0' to 37°0' . More information