Astrolabe Catalogue

 
astrolabe, inventory number 52713 from North Africa, 1728/9 (A.H. 1141)
thumbnail for astrolabe (front), inventory number 52713 from North Africa, 1728/9 (A.H. 1141)
thumbnail for astrolabe (back), inventory number 52713 from North Africa, 1728/9 (A.H. 1141)
thumbnail for astrolabe (rete front), inventory number 52713 from North Africa, 1728/9 (A.H. 1141)
Date1728/9 (A.H. 1141)
MakerMuḥammad ibn Aḥmad al-Baṭṭuṭī
PlaceNorth Africa
MaterialBrass
Inventory no.52713
AcquisitionPresented by Lewis Evans in 1924

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Throne, Ring and Shackle

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

Mater

The mater and limb are of two pieces, riveted construction. Scales on the limb: degree scale. More information

Back

The back contains 8 scales of the following types: Altitude; Zodiacal signs; Calendar; Lunar Mansions; Unequal hours; Sine/Cosine; Shadow square. More information

Rete, Pin & Wedge

The rete contains 25 stars. The zodiac on the rete is labelled: الحمل , الثور , الجوزا , السرطان , الاسد , السنبله , الميزان , العقرب , القوس , الجدي , الدلو , الحوت.

The rete contains 1 scale of the following type: Ecliptic.
The rete is attached using a pin & wedge. More information

Plates

There are 3 plates with latitudes ranging from 21°0' to 36°0' . More information

Rules & Alidades

Type Details
AlidadeDouble-ended.
More information

 

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