Keystone Tests of Binocular Skill
name: label: maker
content: Keystone View Company
notes: label: Description
content: Benneville L. Singley (1864-1938), founder of the Keystone View Company in Meadville, Pa., devised an Ophthalmic Telebinocular, a stereoscopic instrument for testing binocular skill.
label: Description
content: Ref: Benneville L. Singley, “Stereoscope,” U.S. Patent 1,703,787 (Feb. 26, 1929), assigned to the Keystone View Company of Meadville, Pa.
label: Description
content: Keystone View Company, How To Do. Basic Visual Training On The Keystone Telebinocular (Meadville, 1937).
label: Location
content: Currently not on view
setName: label: See more items in
content: Medicine and Science: Medicine
creditLine: label: Credit Line
content: Norma Sperry
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1999.0302.17.12
label: accession number
content: 1999.0302
label: catalog number
content: 1999.0302.17.12
objectType: label: Object Name
content: Test, Psychological
physicalDescription: label: Physical Description
content: paper (overall material)