Photometer
notes: label: Description
content: Charles Greeley Abbot, director of the Smithsonian Astrophysical Observatory, and his assistant, Loyal B. Aldrich, used this photometer to investigate searchlight beams for the Army in 1918. Andrew Kramer (1869-1959)—an instrument maker who worked at the Smithsonian from 1892 to 1953—constructed it from parts of other instruments.
label: Location
content: Currently not on view
setName: label: See more items in
content: Medicine and Science: Physical Sciences
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.314871
label: catalog number
content: 314871
label: accession number
content: 211531
objectType: label: Object Name
content: photometer
physicalDescription: label: Measurements
content: overall: 10 1/4 in x 7 5/8 in; 26.035 cm x 19.3675 cm