Octant
date: label: date made
content: ca 1800
name: label: maker
content: Norie
notes: label: Description
content: Octant with an ebony frame, reinforced brass index arm, and ivory name plate. The ivory scale is graduated every 20 minutes from -3° to +100° and read by vernier with tangent screw to single minutes of arc. There is also a back sight and a back horizon glass that could be used to measure angles greater than 90°. The radius is about 12 inches. An inscription reads "NORIE LONDON". John William Norie established a Navigation Warehouse in London in 1799. The firm traded as Norie & Co. in the years 1816-1839.
label: Description
content: Ref: Gloria Clifton, <i>Directory of British Scientific Instrument Makers 1550-1851</i> (London, 1895), p. 201.
label: Location
content: Currently not on view
place: label: place made
content: United Kingdom: England, London
topic: label: Subject
content: Sailing Ships
setName: label: See more items in
content: Medicine and Science: Physical Sciences
label: See more items in
content: Navigation
label: See more items in
content: Measuring & Mapping
creditLine: label: Credit Line
content: Dorothy Bateman Beck
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.334285
label: catalog number
content: 334285
label: accession number
content: 306664
objectType: label: Object Name
content: octant
physicalDescription: label: Physical Description
content: ebony (overall material)
label: Physical Description
content: brass (overall material)
label: Measurements
content: overall: 12 in x 10 in x 3 1/2 in; 30.48 cm x 25.4 cm x 8.89 cm