Wye Level
name: label: maker
content: Young & Sons
notes: label: Description
content: This instrument isinscribed "Young & Sons, Philadelphia 5867" and dates from around 1875. The mark on the telescope-"Patented July 28th 1874"-refers to the patent (#153,494) granted to J. W. Nystrom and Alfred Young. It describes a method of regulating the focus of a telescope by moving the erecting lenses back and forth while keeping the object glass and cross hairs at a fixed distance from one another.
label: Location
content: Currently not on view
place: label: place made
content: United States: Pennsylvania, Philadelphia
setName: label: See more items in
content: Medicine and Science: Physical Sciences
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content: Surveying and Geodesy
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content: Measuring & Mapping
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.328750A
label: accession number
content: 1988.0553
label: catalog number
content: 328750A
objectType: label: Object Name
content: wye level
physicalDescription: label: Measurements
content: telescope: 19 in; 48.26 cm
label: Measurements
content: overall: 10 in x 21 in x 5 7/8 in; 25.4 cm x 53.34 cm x 14.9225 cm