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    Re: TLA deficiency
    From: Alexandre Eremenko
    Date: 2005 Jun 13, 04:20 -0500

    There was some discussion on this list on
    this, but most questions were solved when I received
    the Russian manuals.
    SNO-T is Sextan Navigatsionnyi s Osvetitelem v Tropicheskom ispolnenii
    (Sextant for Navigation with Illimination, Tropicalized (for use in
    Tropics)))
    SNO-M: the first three letters mean the same, M apparently stands
    for "Modified". About "Modified" I am not 100 sure.
    
    Alex.
    
    On Fri, 10 Jun 2005, Lu Abel wrote:
    
    > I learned a long time ago that if I saw a word or abbreviation with
    > which I was unfamiliar to quietly watch the thread and eventually I'd
    > understand.  But we people seem to toss SNO, SNO-T and SNO-M around on
    > this list, and I've never seen the acronym defined.
    >
    > For myself (and those as confused, but not as motivated to ask) could
    > people please periodically define their acronyms?
    >
    > Thanks
    >
    > Lu Abel
    >
    > Alexandre Eremenko wrote:
    > > In Russian sextants, collimation adjustment is
    > > not a feature of the sextant, but a feature of the scope.
    > > I have never seen an SNO-M in real life, but from the pictures
    > > I conclude that they come with two kinds of scopes.
    > > (Like SNO-T). It is the UNIQUE Russian INVERTING SCOPE
    > > which has the collimation adjustment.
    > > I have not seen ANY other scope like that, and I wonder why
    > > all Call Nav books still mention this adjustment
    > > (which cannot be made on anything but this Russian inverting scope).
    > >
    > > All kinds of Russian sextants and scopes that I know can be seen in
    > > http://www.maurnavy.com/index.html
    > > Picture 2 shows an SNO-M with inverting scope (which has collimation
    > > adjustment).
    > > Picture 1 shows an SNO-T but with ordinary (straight) scope.
    > > (New SNO-T come with two scopes: ordinary and inverting)
    > > Picture 4 shows some old sextant resembling SNO-M with
    > > some old scope (possibly inverting)
    > > which also has the collimation adjustment,
    > > but this is not the modern inverting scope.
    >
    
    
    

       
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