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Ptolemaic Armillary Sphere, by John Rowley, London, c. 1700

preview image for Ptolemaic Armillary Sphere, by John Rowley, London, c. 1700
Inventory Number: 15386
Object Type: armillary sphere
Persons: John Rowley
Date Created:
Place Created: London England United Kingdom Europe
Accession Number: 1925-43
Brief Description: One of a pair of English brass and silvered armilliary spheres made by John Rowley c.1700. The instrument is signed, "I OHN ROWLEY LONDINI FECIT"; it is undated.

See Inv 22258 for its companion item.

The pair of armillary spheres are constructed to demonstrate the planetary theories of Ptolemy and Copernicus. This instrument illustrates the Ptolemaic theory. Small compasses fitted under the horizon bands are used for orientating the instruments, and the bases are fitted with levelling screws. There are separate graduated arcs for measuring altitudes.
Primary Inscriptions: Signed: "I OHN ROWLEY LONDINI FECIT"
Provenance: Lent by Christ Church, Oxford in 1925.
Collection Group: Orrery Collection
Material(s): Brass
Silver
Dimensions:
Height Width Depth Diameter Unit
495 mm

Narratives

Image with multimedia irn 24256Image with multimedia irn 50063Image with multimedia irn 50062

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