Theodolite
name: label: maker
content: Casella, Louis Paschal
notes: label: Description
content: This instrument is marked "L. Casella, Maker to the Admiralty & Ordnance LONDON 5227" and "U.S.C.&G.S." It was made between 1878, when the U. S. Coast Survey became the U. S. Coast and Geodetic Survey, and the death of Louis Casella in 1897. Casella termed it a "Transit Theodolite . . . with achromatic telescope." New, it cost £24.
label: Description
content: Ref: L. P. Casella, <i>List of a Few Instruments in General Use, Selected from the General Catalogue of Standard Meteorological and Other Instruments for Observatories, Travelers and Explorers, and the Army and Navy</i> (London, 1896), p. 26.
label: Location
content: Currently not on view
place: label: place made
content: United Kingdom: England, London
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
publisher: label: Related Publication
content: Clifton, Gloria and Gerard L. E. Turner. Directory of British Scientific Instrument Makers 1550-1851
label: Related Publication
content: Casella, L. P.. List of a Few Instruments in General Use, Selected from the General Catalogue of Standard Meteorological and Other Instruments for Observatories, Travellers and Explorers, and the Army and Navy
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.309657
label: catalog number
content: 309657
label: accession number
content: 106954
objectType: label: Object Name
content: theodolite
physicalDescription: label: Measurements
content: overall: 11 3/4 in; 29.845 cm
label: Measurements
content: horizontal circle: 4 1/2 in; 11.43 cm
label: Measurements
content: vertical circle: 4 1/2 in; 11.43 cm
label: Measurements
content: telescope: 11 in; 27.94 cm
label: Measurements
content: needle: 1 7/8 in; 4.7625 cm
label: Measurements
content: overall: 12 1/4 in x 5 3/4 in x 11 5/8 in; 31.115 cm x 14.605 cm x 29.5275 cm