Dialling Sphere, by John Rowley, London, c. 1700
|Inventory Number:|| 31922|
|Object Type:|| |
|Place Created:|| London England United Kingdom Europe
|Brief Description:||English brass dialling sphere. Signed, "I: Rowley fec:"; undated; c.1700|
This is an instrument for drawing sundials. A contemporary manuscript, possibly written by the maker John Rowley, describes its use.
The three bands represent the meridian, the equinoctial and the horizon, while the thin plate, which tilts and rotates within the horizon band, represents the plane of inclination of the dial to be drawn. Using a candle and a line, shadows can be cast on to the plate for successive positions of the sun.
|Primary Inscriptions:||Signed, "I: Rowley fec:"|
|Provenance:||Lent by Christ Church, Oxford in 1925.|
|Collection Group:||Orrery Collection|