Backstaff
date: label: date made
content: ca 1773
name: label: maker
content: Hagger, William G.
notes: label: Description
content: The frame of this instrument is rosewood, while the arcs, brace, and vanes are boxwood. The frame is inscribed "Wm. G. Hagger Newpt R. Island For M–" and "364." The "364" inscribed on the back of the larger arc is probably a serial number, indicating that this instrument dates from around 1773.
label: Description
content: William Guyse Hagger (1748-1832) was an instrument maker in Newport, Rhode Island, until the Revolution, when British troops occupied that city.
label: Description
content: Ref: Deborah J. Warner, "Davis Quadrants in America,"<i>Rittenhouse</i> 3 (1988): 23-40, on 32-33.
label: Location
content: Currently not on view
place: label: place made
content: United States: Rhode Island, Rhode Island, Newport
topic: label: Subject
content: Revolutionary War
setName: label: See more items in
content: Medicine and Science: Physical Sciences
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content: Navigation
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content: Measuring & Mapping
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.319029
label: catalog number
content: 319029
label: accession number
content: 236168
objectType: label: Object Name
content: backstaff
physicalDescription: label: Measurements
content: overall: 17.5 cm x 68 cm x 39 cm; 6 7/8 in x 26 25/32 in x 15 11/32 in
label: Measurements
content: overall in box: 7 in x 15 5/16 in x 26 3/4 in; 17.78 cm x 38.89375 cm x 67.945 cm