Geometric Model, Ruled Surface Adjustable from Double Cone and Cylinder to Hyperboloid of One Sheet
notes: label: Description
content: This adjustable string model has four round horizontal brass discs and a central base, spindle and handle. There are holes around the edges of the discs, and the middle one may be rotated. The strings of the model pass through the holes. In one position, they form a cone and a cylinder. In another, they form a hyperboloid of one sheet.
label: Description
content: The model has no maker's mark.
label: Description
content: This model follows the design of an Olivier or Brill model of a quadric surface. Compare to the model by L. Brill with museum number 1985.0112.009.
label: Location
content: Currently not on view
topic: label: Subject
content: Mathematics
setName: label: See more items in
content: Medicine and Science: Mathematics
label: See more items in
content: Science & Mathematics
creditLine: label: Credit Line
content: Gift of the Department of Mathematics, The University of Michigan
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1982.0795.30
label: accession number
content: 1982.0795
label: catalog number
content: 1982.0795.30
objectType: label: Object Name
content: Geometric Model
physicalDescription: label: Physical Description
content: brass (rings material)
label: Physical Description
content: iron (framework material)
label: Physical Description
content: string (threads material)
label: Measurements
content: overall: 42 cm x 21 cm x 21 cm; 16 17/32 in x 8 9/32 in x 8 9/32 in