Photographic Plate Holder
notes: label: Description
content: Double-slide photographic plate holder made by George Willis Richey between 1930 and 1935, for use with the 40-inch aperture Ritchey-Chretien aplanatic reflector at the U.S. Naval Observatory, and later moved to Flagstaff, Arizona.
label: Description
content: Ref: Deborah J. Mills, "George Willis Ritchey and the Development of Celestial Photography," <i>American Scientist</i> 54 (1966): 66-94.
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.327701
label: accession number
content: 283654
label: catalog number
content: 327701
objectType: label: Object Name
content: Photographic Plate Holder
physicalDescription: label: Measurements
content: overall: 7 7/8 in x 19 3/4 in x 19 1/4 in; 20.0025 cm x 50.165 cm x 48.895 cm