Gradienter
name: label: maker
content: Shilling, George
notes: label: Description
content: This instrument is marked "Geo. Shilling Washn D.C." and "U.S.G.S." It was made for the U.S. Geological Survey, and transferred to the Smithsonian in 1907. 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; another level vial sits on the horizontal circle. The inside of the lens cap is marked "U.S.G.S. No 2."
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.247906
label: catalog number
content: 247906
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: 9 7/8 in x 4 3/8 in x 9 1/4 in; 25.0825 cm x 11.1125 cm x 23.495 cm