Analog Computing Component - Electrical Resolver
date: label: date made
content: ca 1920
name: label: maker
content: Ford Instrument Company
notes: label: Description
content: Ford Instrument Company made this device to “electrically perform functions comparable to those of the mechanical component solvers.” For mechanical component solver cams, see for example 1982.0751.01 and 1982.0751.02.
label: Description
content: This component has a cylindrical metal case painted bright red with a brownish-black bottom. Four openings in the side of the cylinder reveal two further cylinders, one atop the other, that rotate on a vertical shaft. The bottom of the base has a clear plastic cover on the inside and eight outer segments. A mark under the plastic reads: 595595. The base has four small holes for fasteners near the circumference, and eight holes that might admit wires. The segments are lettered: R4, R3, R2, R1, S4, S3, S2, and S1. A plastic-coated label, now loose, reads: #57 ELECTRIC (/) RESOLVER.
label: Description
content: Reference:
label: Description
content: Accession file.
label: Description
content: K.C. Epstein, <I>Analog Superpowers: How Twentieth Century Technology Theft Built the National Security State<I>, Chicago and London: University of Chicago Press, 2024.
label: Location
content: Currently not on view
place: label: place made
content: United States: New York, Queens, Long Island City
topic: label: Subject
content: Mathematics
setName: label: See more items in
content: Medicine and Science: Mathematics
creditLine: label: Credit Line
content: Ford Instrument Company, Division of Sperry Rand Corporation
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1982.0751.28
label: accession number
content: 1982.0751
label: catalog number
content: 1982.0751.28
objectType: label: Object Name
content: analog computing component
physicalDescription: label: Physical Description
content: metal (overall material)
label: Physical Description
content: plastic (cover material)
label: Measurements
content: overall: 19 cm x 9.3 cm x 9.3 cm; 7 15/32 in x 3 21/32 in x 3 21/32 in