Image of the W. & S. Jones improved achromatic telescope

Image of the W. & S. Jones improved achromatic telescope

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Description
Engraved image from the “Directions” for using the improved achromatic telescope made by W. & S. Jones of London. Andrew Ellicott (1754-1820), American surveyor and geodesist, used a telescope of this sort to observe the moons of Jupiter, to determine longitude on earth. That telescope is now in the Museum collections.
Location
Currently not on view
Object Name
book page
Measurements
one page: 7 in x 8 in; 17.78 cm x 20.32 cm
overall with backing: 7 7/8 in x 9 in x 1/2 in; 20.0025 cm x 22.86 cm x 1.27 cm
ID Number
PH.310346.03
catalog number
310346.03
accession number
116914
See more items in
Medicine and Science: Physical Sciences
Data Source
National Museum of American History
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