Welcome to the NavList Message Boards.

NavList:

A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding

Compose Your Message

Message:αβγ
Message:abc
Add Images & Files
    Name or NavList Code:
    Email:
       
    Reply
    Re: SNOT design. Was: Why is a sextant like it is?
    From: Joel Jacobs
    Date: 2004 Nov 20, 22:59 +0000
    Alex,
     
    Flash. I now see what you mean. There is a curved brace about 3/4 way above the brace that is indeed behind the index arm. As your proferred, it does ad rigidity.
     
    Joel
    --
    Visit our website
    http://www.landandseacollection.com


    -------------- Original message from Yourname Here <joel-jacobs@ATT.NET>: --------------

    Alex,
     
    Sorry for the long delay in responding. I'm in St. Mary's, GA after delivering some boat models in Brunswick, GA. They are made of bone in the fashion of POW War of 1812 Dartmoor Prisioner examples. Both Brunswick and St. Mary's are very old Southern seaports. But I digress.
     
    I looked at the links you provided, thank you. Please compare them to these pictures from my own server.
     
    Note that the sextants are the same. The index arm slides behind the arc with a nuckle that allows the tangent screw to ride on the bottom of the arc. I've recntly sold that sextant so I can't inspect it, but I have no recollection that the index arm slid between a front arc and back arc. Or did I misunderstand you.
     
    All the best,
     
    Joel Jacobs
     
    --
    Visit our website
    http://www.landandseacollection.com


    -------------- Original message from Alexandre Eremenko <eremenko@MATH.PURDUE.EDU>: --------------


    > Dear Joel,
    > I don't have a digital camera, but you
    > can see VERY good pictures of EXACTLY the same
    > sextant on
    > http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=37971&item=3762360200&rd=
    > 1&ssPageName=WDVW
    > and
    > http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=60368&item=3762108473&rd=
    > 1&ssPageName=WDVW
    > What Russian e-bay traders really do very well is
    > photographs:-)
    >
    > Alex.
    >
    > On Fri, 19 Nov 2004, Yourname Here wrote:
    >
    > > Alex,
    > >
    > > Please send me a picture of your sextant or better yet post it on a website
    > where everyone can see it. I will reserve my comments un! ! til then.
    > >
    > > Joel Jacobs
    > > --
    > > Visit our website
    > > http://www.landandseacollection.com
    > >
    > >
    > >
    > >
    > > -------------- Original message from Alexandre Eremenko
    > : --------------
    > >
    > >
    > > > Dear Chuck:
    > > >
    > > > >Add to
    > > > >that if the handle were on the opposite side as now,
    > > > >the arm would have to
    > > > >be in the back between the legs.
    > > > >Otherwise the handle would have to span the
    > > > >entire front to avoid interfering with the arm.
    > > > >This would add weight to the sextant.
    > > >
    > > > This message made me inspect my SNO-T again,
    > > > and I found an interesting thing.
    > > > Its design is very di! ff! erent from the conventional one.
    > > > You can see this in many web photographs on e-bay.
    > > >
    > > > In most traditional sextants, the arm moves
    > > > "in front of" or "above" the frame.
    > > > In SNO-T (and Freiberger) it moves "inside" the frame.
    > > > The frame is of "two layer" construction.
    > > > And the arm moves between these two layers.
    > > >
    > > > This is very different from the C.Plath-type
    > > > (Tamaya, Astra, SNO-M) and British
    > > > sextants I know.
    > > >
    > > > Alex.
       
    Reply
    Browse Files

    Drop Files

    NavList

    What is NavList?

    Get a NavList ID Code

    Name:
    (please, no nicknames or handles)
    Email:
    Do you want to receive all group messages by email?
    Yes No

    A NavList ID Code guarantees your identity in NavList posts and allows faster posting of messages.

    Retrieve a NavList ID Code

    Enter the email address associated with your NavList messages. Your NavList code will be emailed to you immediately.
    Email:

    Email Settings

    NavList ID Code:

    Custom Index

    Subject:
    Author:
    Start date: (yyyymm dd)
    End date: (yyyymm dd)

    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site