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    Re: Lunar distance accuracy
    From: Wolfgang K�berer
    Date: 2007 Oct 25, 10:23 +0200

    Two local museums (The Whipple museum for the History of science in Oxford,
    UK, and the National Maritime Museum in Greenwich,UK) list sextants mounted
    on pillars among the objects they possess. They are not "pillar sextants" of
    the double frame type, but clearly not for use on board. So it seems they
    are a special type intended for surveying on land. 
    Dr. Wolfgang K�berer
    Wolfsgangstr. 92
    D-60322 Frankfurt am Main
    Tel: + 49 69 95520851
    Fax: + 49 69 558400
    e-mail: koeberer{at}navigationsgeschichte.de
    -----Urspr�ngliche Nachricht-----
    Von: NavList@fer3.com [mailto:NavList@fer3.com] Im Auftrag
    von Michael Daly
    Gesendet: Donnerstag, 25. Oktober 2007 07:03
    An: NavList@fer3.com
    Betreff: [NavList 3563] Re: Lunar distance accuracy
    frankreed{at}HistoricalAtlas.net wrote:
    > As a corollary, is it possible that it's only you (and maybe a local 
    > museum in Oxford which you mentioned once before) that refer to a sextant
    > a stand as a "pillar sextant"? In the period, the term was used for the 
    > well-known double-frame design, originally patented by Troughton.
    Is it possible that someone confused a surveyor's sextant (mounted on a 
    surveyor's staff or Jacob's staff) with a "pillar" sextant?
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