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Backstaff - click to enlarge

Backstaff - click to enlarge

Backstaff - click to enlarge

Backstaff - click to enlarge

Click image to enlarge.

Backstaff

Catalogue number:
PH*319029

Inscriptions:
"Wm. G. Hagger Newpt R. Island For M–" and "364"

Dimensions:
length overall 26.75 inches

Discussion:
William Guyse Hagger (1748-1832) was an instrument maker in Newport, Rhode Island, until the Revolution, when British troops occupied that city. The frame of this instrument is rosewood, while the arcs, brace, and vanes are boxwood. The "364" inscribed on the back of the larger arc is probably a serial number, indicating that this instrument dates from around 1773.

Ref: Deborah J. Warner, "Davis Quadrants in America," Rittenhouse 3 (1988): 23-40, on 32-33.

Further Information:

Backstaff

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