Concave Black Marble Disc, for Lens Polishing?, c. 1700?
|Inventory Number:|| 14260|
|Object Type:|| |
|Brief Description:||Octagonal, concave black marble disk, possibly c.1700, thought to be used for polishing lenses according to the method described by Zahn, 'Oculus artificialis: Telescopii practico-mechanici Fabrica', 1686 (p.9).|
|Provenance:||Lent by Christ Church, Oxford in 1925.|
|Collection Group:||Orrery Collection|