Wheatstone-type Sundial by Darker
date: label: date made
content: about 1850
label: date made
content: ca 1850
notes: label: Description
content: This instrument consists of a brass cone with appropriate lenses, a metal bar which can be raised or lowered to rotate the cone vertically, a brass supporting rod and a wooden stand with screws on the four corners.
label: Description
content: Reference:
label: Description
content: Charles Wheatstone, "On a means of determining the apparent Solar Time by the diurnal Changes of the Plane of Polarization at the North Pole of the Sky," <I>Report of the British Association for the Advancement of Science</I>, 1848, pp. 10-12 (Works, London: Taylor & Francis, 1879, 285-289).
label: Location
content: Currently not on view
place: label: place made
content: United Kingdom: England, London, Lambeth
topic: label: Subject
content: Mathematics
label: Subject
content: Timekeeping
setName: label: See more items in
content: Medicine and Science: Mathematics
creditLine: label: Credit Line
content: Gift of the University of Alabama, Department of Physics
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: MA.325954
label: catalog number
content: 325954
label: accession number
content: 317854
objectType: label: Object Name
content: Sundial
physicalDescription: label: Physical Description
content: wood (overall material)
label: Physical Description
content: brass (overall material)
label: Physical Description
content: glass (overall material)
label: Measurements
content: overall: 66.8 cm x 24.8 cm x 21.2 cm; 26 5/16 in x 9 3/4 in x 8 3/8 in