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Sector
Attributed to James Kynvyn
circa 1600; London
Brass; 268 mm in radius
This instrument closely resembles the pattern of sector first publicised by Thomas Hood in his 1598 book on The Making and Use of the Geometricall Instrument, called a Sector.It can be used for the graphical solution of problems of proportion and, when fitted with sights, serves as a measuring instrument for surveying and other tasks of practical geometry. Angles between the two limbs are measured by scales on the circular arc, which also carries an incomplete table of gunnery information.
Museum of the History of Science, Oxford
Inventory number 44505
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Basic URL: http://www.mhs.ox.ac.uk/epact/catalogue.php?ENumber=58008 |
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