Telescopic Alidade
date: label: date made
content: 1904-1947
name: label: maker
content: Lietz, Adolph
notes: label: Description
content: This telescopic alidade is marked “THE A. LIETZ CO. / SAN FRANCISCO, U.S.A.; 11417.” It has a compass and a long bubble level on the base. The Beaman stadia arc attached to the vertical circle simplified the computation of elevation differences for inclined stadia sights. William M. Beaman (1867-1937), U.S. topographic engineer, designed the form in 1904.
label: Description
content: Ref: U.S. Geological Survey, <i>Instructions for Using Beaman Stadia Arc Attachment</i> (1908).
label: Description
content: “Maj. Beaman, Of Geological Survey, Is Dead,” Washington Post (March 3, 1937), p. 16.
label: Location
content: Currently not on view
place: label: place made
content: United States: California, San Francisco
topic: label: Subject
content: Surveying
setName: label: See more items in
content: Medicine and Science: Physical Sciences
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1984.0636.11
label: accession number
content: 1984.0636
label: catalog number
content: 1984.0636.11
objectType: label: Object Name
content: alidade
physicalDescription: label: Measurements
content: overall: 13 5/8 in x 5 in x 6 1/8 in; 34.6075 cm x 12.7 cm x 15.5575 cm