Speculum Metal Mirror, 1840-60
1840-1860
Four speculum metal secondary mirrors thought to have been made by James Nasmyth
- Made:
- 1850-1870 in Patricroft
- maker:
- James Hall Nasmyth
Four speculum metal secondary mirrors thought to have been made by James Nasmyth. Donated by Lieutent General A de Gorloff who lived at Nasmyth's former home of Hammerfield near Penshurst in Kent.
Details
- Category:
- Astronomy
- Object Number:
- 1897-15
- Materials:
- speculum (alloy of copper and tin), pitch and brass (copper, zinc alloy)
- Measurements:
-
see parts
- type:
- components, metal mirrors and astronomical instruments
- credit:
- Lieutenant General A de Gorloff
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