Heliostat
date: label: date made
content: ca 1900
name: label: maker
content: Duboscq, Jules
notes: label: Description
content: A heliostat throws sunlight where it might be used for photography or scientific observations. This unsigned example consists of a rectangular mirror with rounded corners that is mounted in a metal frame and supported on a tri-leg base. It has no clockwork, but it does have tangent screws for turning the mirror around its vertical and horizontal axes. Several manufacturers offered “laboratory heliostats” of this general design.
label: Description
content: Ref. Société Genevoise, <i>Illustrated Price List of Physical and Mechanical Instruments</i> (Geneva, 1900), item 2120, pp. 85-86.
label: Description
content: Max Kohl, <i>Price List No. 50, Vol. 1</i> (Chemnitz, n.d.), pp. 34-35.
label: Location
content: Currently not on view
topic: label: Subject
content: Science & Scientific Instruments
setName: label: See more items in
content: Medicine and Science: Physical Sciences
label: See more items in
content: Science & Mathematics
label: See more items in
content: Optics
creditLine: label: Credit Line
content: U.S. Military Academy
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.315433
label: accession number
content: 217544
label: catalog number
content: 315433
objectType: label: Object Name
content: heliostat
physicalDescription: label: Measurements
content: overall: 23 1/2 in; 59.69 cm
label: Measurements
content: mirror: 14 in x 8 in; 35.56 cm x 20.32 cm
label: Measurements
content: overall: 17 7/16 in x 11 in x 14 in; 44.29125 cm x 27.94 cm x 35.56 cm