Record Details

Astrolabe with Geared Calendar, by Muhammad b. Abi Bakr, Isfahan, 1221/2

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Inventory number: 48213
Object type:astrolabe
Creator name: Muhammad b, AbiBakr
Creation date: 618 A.H (1221/2 A.D.)
Creation place:Isfahan, Iran/Persia, Asia
(32.65139, 51.67919)

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Accession number:1924-0/part
Brief description:

Astrolabe with rete incorporating sights, 2 latitude plates, mater with pierced throne. The back has a calendar with three apertures, one showing the lunar phase, one the numerical age of the moon, one the positions of the sun and moon in the zodiac. The calendar, worked by the motion of the rete, is moved by a gear train within the mater, comprising 5 cog wheels, 2 of which are double. Pin and horse. The soldering of the central gear wheel to the pin has failed.

Primary inscriptions:"Made by Muhammad b. Abi Bakr b. Muhammad al-Rashidi al-Ibari [or al-Abiri] al-Isfahani". "618 [A.H. = 1221-2 A.D.]" On one of the wheels is engraved, 'Its owner is the poor man Hasan Shâh'.
Provenance:Presented by Lewis Evans.
Material: Brass with silver ornament
Dimensions:
TypeHeightWidthDepthDiam.Unit
Object27518550mm

Narratives:

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