Beam Compasses

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Name currently used. In the Renaissance it was called sestone (sextant).


Contents

Historic Period

XV-XVI century.


Description

Compass for drawing large circumferences composed of a long rod with two cursors sliding along it, carrying a fixed point and a pen point.


Bibliographical Resources

Della Volpaia, Benvenuto, Macchine e strumenti, ms., XVI secolo, Venezia, Biblioteca Marciana, It. IV, 41 (= 5363), c. 53r-v, 56r.


Existing Instruments

- Museum of the History of Science, Oxford
Museum of the History of Science, Oxford, inv. 51264


Links (External)

http://www.tpub.com/engbas/2-11.htm (English)
http://www.mathsinstruments.me.uk/page63.html (English)


Images


Author of the entry: Filippo Camerota

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