NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Sextant Terms
From: Alexandre Eremenko
Date: 2007 Oct 23, 10:13 -0400
From: Alexandre Eremenko
Date: 2007 Oct 23, 10:13 -0400
On Tue, 23 Oct 2007, [ISO-8859-1] Nicol�s de Hilster wrote: > For the Plath I am looking for the pentagon prism. > Anyone any idea where > to get one? Have you tried Cassens-Plath? Alex. > Nicol�s > > > Chuck Taylor wrote: > > The U.S. Coast Guard has historically used sextants for taking horizontal angles in order to precisely place aids to navigation such as buoys. Given that this example has no shades, I suspect that that was how this unit was used. > > > > Chuck Taylor > > 48 N > > 122 W > > > > Nicol�s de Hilster wrote: > > > > > >> > >> > > There are surveyors sextants (C. Plath for instant) that have an > > additional pentagon prism attached. This prism adds 90 degrees to the > > observed angle, so measuring 140 degrees should be no problem with that > > > > prism attached. > > > > One has been for sale on E-bay recently: > > http://cgi.ebay.co.uk/US-Coast-Guard-Weems-Plath-Sextant-w-Case_W0QQitemZ300160900331QQihZ020QQcategoryZ37971QQssPageNameZWDVWQQrdZ1QQcmdZViewItem > > > > Nicol�s > > > > > > > > > > > > __________________________________________________ > > Do You Yahoo!? > > Tired of spam? Yahoo! Mail has the best spam protection around > > http://mail.yahoo.com > > > > > > > > > > > > > > > > --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to NavList@fer3.com To , send email to NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---
