Astronomical Transit Instrument
name: label: maker
content: Warner & Swasey Company
notes: label: Description
content: This instrument, known variously as a transit or meridian circle, was installed in the student observatory at Swarthmore College, in Swarthmore, Pennsylvania, in 1886. The "Warner & Swasey Makers Cleveland, Ohio" inscription identified the firm that made the mount. The lenses were figured by Alvan Clark & Sons. The telescope has a clear aperture of 3 inches, and a focal length of about 3 feet. The circles at either end of the axis measure 16 inches in diameter. One circle is graduated to 10" of arc and read by verniers to 1' of arc; the other is used as a finder.
label: Description
content: Ref: Swarthmore College, <i>Catalogue</i> (1885-1886), p. 11.
place: label: place made
content: United States: Ohio, Cleveland
setName: label: See more items in
content: Medicine and Science: Physical Sciences
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1986.0667.01
label: catalog number
content: 86.667.1
label: accession number
content: 1986.0667
objectType: label: Object Name
content: Transit, Astronomical
physicalDescription: label: Physical Description
content: brass (overall material)
label: Physical Description
content: iron (overall material)