NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Robert H. van Gent
Date: 2018 Jan 26, 10:02 +0000
Hi,
The depicted instrument is actually an octant.
Such instruments and their use are described detail in
https://global.oup.com/academic/product/sextants-at-greenwich-9780199532544
Rob van Gent
From: NavList@fer3.com [mailto:NavList@fer3.com]
On Behalf Of German Diaz
Sent: 25 January 2018 19:09
To: Gent, R.H. van (Rob)
Subject: [NavList] Question about old sextant
Hello my friends of Celestial Navigation,
I have been consulted by the National Museum of Colombia about a sextant used by the Scientific Mission contracted by Francisco Antonio Zea and used for his meteorological studies, in 1823. It is described as being of English
manufacture, assembly of wood and metal, 41 x 33.5 x 6.2 cm
I want to ask for your help if someone knows the operation of the part that I highlight in the image of the sextant and if someone has more knowledge about the history of this sextant.
Thank you
German Diaz
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