Astrolabe Catalogue

 
astrolabe, inventory number 47376 from Lahore, ca. 1570
thumbnail for astrolabe (front), inventory number 47376 from Lahore, ca. 1570
thumbnail for astrolabe (back), inventory number 47376 from Lahore, ca. 1570
thumbnail for astrolabe (rete front), inventory number 47376 from Lahore, ca. 1570
Dateca. 1570
MakerAllāh-Dād
PlaceLahore
MaterialBrass
Inventory no.47376
AcquisitionPresented by J. A. Billmeir in 1957

View all images for this astrolabe
View detailed provenance for this astrolabe

Throne, Ring and Shackle

The throne is of the indo-persian, pierced type made of brass attached with integrated base made of brass and has a simple, squared cross-section ring made of brass and trefoil 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. More information

Back

CHECK the astrological scales on the back of this instrument. I have in the past figured them out.. The back contains 11 scales of the following types: Altitude; Sine/Cosine; Declination; Cotangent; Shadow square; Faces; Triplicities. More information

Rete, Pin & Horse

The rete contains 0 stars. The rete contains zoomorphs: two star pointers (النسر الواقع and النسر الطاير) are indicated by the figures of birds. The zodiac on the rete is labelled: الحمل , الثور , الجوزا , السرطان , الاسد , السنبله , الميزان , العقرب , القوس , الجدي , الدلو , الحوت .
The rete is attached using a pin & horse. The pin is a simple, round-headed pin. The horse was engraved with attention to detail and life-like representation.. More information

Plates

There are 6 plates with latitudes ranging from 21°0' to 66°0' . More information

Rules & Alidades

Type Details
AlidadeDouble-ended. The right-hand sight is bent toward the center. The upper edge along the right arm is marked with a scale..
PointerSingle-ended. The rule is not original.
More information

 

MHS Home | Contact Us | ©2006 Museum of the History of Science