Telescope (Spyglass)

Telescope (Spyglass)

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Usage conditions apply
The tube of this telescope consists of two threaded wooden (mahogany) sections screwed together that measure 113 cm (closed) or 117.5 cm (fully extended). The achromatic objective lens measures 3.5 cm in diameter (or 3.4 cm clear diameter). The eyepiece consists of four lenses in a brass cylinder (5 separate brass cylinders, screwed together) with a sliding brass cover. The instrument gives gives an erect (terrestrial) image.
The "Nairne, London" inscription on the sliding brass lens cover refers to the important instrument maker, Edward Nairne (1726-1806).
Ref: D.J. Warner, "Edwarne Nairne: Scientist and Instrument Maker," Rittenhouse 12 (1998): 65-93.
Currently not on view
Object Name
telescope (spyglass)
Nairne, Edward
place made
United Kingdom: England, London
overall: 101 5/16 in x 5 13/32 in; 257.302 cm x 13.716 cm
ID Number
accession number
catalog number
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Medicine and Science: Physical Sciences
Measuring & Mapping
Data Source
National Museum of American History
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