. Bulletin - United States National Museum. Science. Figure 72.—Brass quadrant made by Andrew Ellicott about 1790 and used for running the southern boundary of the United States about 1796 and 1800, and on later surveys. USNM 152081. Telescopey consisting of a brass tube 3^2 in. long with an aperture of 2% in.; on its original brass tripod, with a serviceable altazimuth mounting. Late 18th century. Made by "W. & S. Jones/135 ; The firm of "W. & S. Jones" was a partnership of two brothers, Samuel and William Jones, opticians, who worked at 30 Lower Hol
. Bulletin - United States National Museum. Science. Figure 72.—Brass quadrant made by Andrew Ellicott about 1790 and used for running the southern boundary of the United States about 1796 and 1800, and on later surveys. USNM 152081. Telescopey consisting of a brass tube 3^2 in. long with an aperture of 2% in.; on its original brass tripod, with a serviceable altazimuth mounting. Late 18th century. Made by "W. & S. Jones/135 ; The firm of "W. & S. Jones" was a partnership of two brothers, Samuel and William Jones, opticians, who worked at 30 Lower Holborn and at 135 Holborn in London, from 1793. They bought 135. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States National Museum; Smithsonian Institution; United States. Dept. of the Interior. Washington : Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off.
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Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
