Heliostat
date: label: date made
content: around 1900
name: label: maker
content: Brashear, John A.
notes: label: Description
content: A heliostat throws sunlight where it might be used for photography or scientific observations. This example (half of a two mirror instrument) has a silvered-glass octagonal mirror, clockwork mechanism, and tripod base with leveling screws. The “J. A. Brashear, Allegheny, Pa.” inscription refers to John A. Brashear who began making telescopes in 1880, in a shop behind his house in Pittsburgh, and who established a new shop in Allegheny, then a suburb of Pittsburgh, in the fall of 1886.
label: Description
content: Ref: John A. Brashear, <i>Catalogue</i> (Allegheny, 1906), p. 35.
label: Location
content: Currently not on view
place: label: place made
content: United States: Pennsylvania, Pittsburgh
topic: label: Subject
content: Science & Scientific Instruments
setName: label: See more items in
content: Medicine and Science: Physical Sciences
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.315729
label: catalog number
content: 315729
label: accession number
content: 217544
objectType: label: Object Name
content: heliostat
physicalDescription: label: Measurements
content: overall: 20 in; 50.8 cm
label: Measurements
content: overall: 18 1/2 in x 12 3/8 in x 12 1/2 in; 46.99 cm x 31.4325 cm x 31.75 cm