comparator, optical
date: label: date made
content: ca 1880
notes: label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Production and Manufacturing
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: MC.322287
label: catalog number
content: 322287
label: accession number
content: 250997
objectType: label: Object Name
content: Comparator, Optical
label: Object Name
content: Comparator
physicalDescription: label: Measurements
content: overall: 27 in x 67 1/2 in x 20 in; 68.58 cm x 171.45 cm x 50.8 cm
label: Measurements
content: base: 28 1/2 in x 75 in x 27 in; 72.39 cm x 190.5 cm x 68.58 cm