Speculum Mirror, 1861

Made:
1861 in Patricroft
maker:
James Hall Nasmyth
Flat metal speculum mirror, one of three

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Flat metal speculum mirror, one of three
Science Museum Group
© The Board of Trustees of the Science Museum

Flat metal speculum mirror, one of three, of 4 1/2-inch diameter for reflecting telescope, 1861. May have been part of James Nasmyth's reflecting telescope.

Details

Category:
Astronomy
Object Number:
1897-14/3
Materials:
speculum (bronze alloy with arsenic)
Measurements:
overall: 23 mm x x , 114 mm, 2.04kg
type:
components, flat mirrors, metal mirrors and astronomical instruments
credit:
Lieutenant General A de Gorloff