Four primary metal speculum metal mirrors

Made:
1840-1850 in Patricroft
maker:
James Hall Nasmyth

Four primary metal speculum metal mirrors, three of 4 1/2- inch diameter and one of 8 5/8 inch mirror with central circular hole. Donated by Lieutent General A, de Gorloff who lived at Nasmyth's former home of Hammerfield near Penshurst in Kent. Four similar mirrors were originally donated but one was returned to be replaced by the larger one [see file for details].

Speculum Mirror, 1850-1870

Speculum Mirror, 1850-1870

1850-1870
Speculum Mirror, 1850-1870

Speculum Mirror, 1850-1870

1850-1870
Speculum Mirror, 1861

Speculum Mirror, 1861

1861
Primary metal speculum mirror with central hole

Primary metal speculum mirror with central hole

1840-1850
Wooden case for four speculum metal mirrors

Wooden case for four speculum metal mirrors

1840-1850

Details

Category:
Astronomy
Object Number:
1897-14
Materials:
speculum
type:
components, concave mirrors, metal mirrors and astronomical instruments
credit:
Lieutenant General A de Gorloff

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