Gradienter
name: label: maker
content: Shilling, George
notes: label: Description
content: This gradienter marked "Geo. Shilling Washn D.C." and "U.S.G.S. No 4" was made after 1882 when George Shilling began in business, and before 1907 when the U.S. Geological Survey transferred it to the Smithsonian. The horizontal circle and vertical arc are silvered, graduated to 30 minutes, and read by verniers to single minutes. A level vial sits atop the telescope; a circular level sits on the horizontal circle, obscuring most of Shilling's signature.
label: Description
content: George Shilling (1844–1917) was born and educated in Norway and moved to the United States in 1867. In 1882, after working in several American instrument shops, he went into business on his own, manufacturing surveying and astronomical instruments. His shop was in Washington, D.C., and the federal government was his biggest customer.
label: Location
content: Currently not on view
place: label: place made
content: United States: District of Columbia, Washington
setName: label: See more items in
content: Medicine and Science: Physical Sciences
label: See more items in
content: Surveying and Geodesy
label: See more items in
content: Measuring & Mapping
creditLine: label: Credit Line
content: U.S. Geological Survey
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.247907
label: catalog number
content: 247907
label: accession number
content: 47736
objectType: label: Object Name
content: gradienter
physicalDescription: label: Measurements
content: horizontal circle: 4 1/4 in; 10.795 cm
label: Measurements
content: telescope: 9 1/2 in; 24.13 cm
label: Measurements
content: overall: 8 9/16 in x 4 1/4 in x 9 7/8 in; 21.74875 cm x 10.795 cm x 25.0825 cm