Holbeche Backstaff

Description
The frame of this instrument is rosewood, while the arcs, cross bar, and sights are boxwood. The boxwood inset is inscribed "Made.by.John.Holbeche.for Capt Joseph.Swan.1738." John Holbeche advertised an Instrument Maker & Ship-Chandler at the Corner of the Hermitage in London.
Ref: Gloria Clifton, Directory of British Scientific Instrument Makers 1550-1851 (London, 1995), p. 138.
Object Name
backstaff
date made
1838
maker
John Holbeche
Measurements
overall: 25 in; 63.5 cm
overall: 22 3/4 in x 34 3/4 in x 2 in; 57.785 cm x 88.265 cm x 5.08 cm
place made
United Kingdom: England, London
ID Number
PH*318439
catalog number
318439
accession number
234475
subject
Measuring & Mapping
Navigation
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Medicine and Science: Physical Sciences
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Data Source
National Museum of American History, Kenneth E. Behring Center
Additional Media

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