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Refracting Telecope

Refracting Telecope

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Description
This telescope has a brass pillar-and-tripod base, a 38-inch long wooden tube with brass fittings, a sliding rod for holding the telescope at a particular elevation, an achromatic objective of 2 inches aperture, four eyepieces, and a wooden box with a hinged lid. The brass ferrule at the eye end of the tube is marked “DOLLOND LONDON.”
The Dollond family began in business as opticians in London in 1750. George Dollond took responsibility for the firm around 1820 and shortened the signature to Dollond.
Ref: Gloria Clifton, “Dollond Family,” in Oxford Dictionary of National Biography.
Location
Currently not on view
Object Name
telescope
date made
mid 19th century
maker
Dollond
place made
United Kingdom: England, London
Measurements
overall: 9 cm x 78.5 cm x 17.5 cm; 3 17/32 in x 30 29/32 in x 6 7/8 in
overall in case: 3 3/8 in x 30 3/4 in x 6 3/4 in; 8.5725 cm x 78.105 cm x 17.145 cm
overall: bag of parts: 1 3/4 in x 5 3/4 in x 10 in; 4.445 cm x 14.605 cm x 25.4 cm
ID Number
PH.335518
accession number
321714
catalog number
335518
See more items in
Medicine and Science: Physical Sciences
Science & Mathematics
Data Source
National Museum of American History
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