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Ken,
Several years later, I had a telephone conversation
with a factory director (I don't know whether this was the same one),
and he told me so much nonsense that I am not surprised with
the information about the paint:-)

However I was able to conclude from the conversation that they did not make them
anymore. Few years later I wrote to them, and received a reply confirming this.

You may be right about bribing.
But another explanation is that they were not producing sextants already in 1992.
Did you notice the year on the sextant they showed you?

Alex.
________________________________________
From: NavList@navlist.net [NavList@navlist.net] on behalf of Ken Gebhart [NoReply_Gebhart@navlist.net]
Sent: Friday, October 24, 2014 4:31 PM
To: eremenko@math.purdue.edu
Subject: [NavList] Re: What does it mean "tropicalized"?

  When I was at the factory in St. Petersburg in 1992, they brought our
a SNO-T that I was interested in importing.  The factory director
proudly explained that the gray box paint was resistant to nuclear
radiation. I never could get a reasonable price to import them; probably
because I did not personally bribe the Director.

Ken


On 10/24/14 2:16 PM, Alexandre Eremenko wrote:
> It is well-known that SNO-T in the  Soviet sextant means:
>
> S - Sextant
> N - for Navigation
> O - with an illumination device ("Osvetitel")
> T - Tropicalized.
>
> What did they exactly mean by "tropicalized" ?
> I have only conjectures.
>
> 1. Both SNO-M and SNO-T have the unique magnifier
> with luminous paint, so it works for illumination of the scales.
> The manuals say that the scales themselves are covered with this paint,
> but I don't believe them. It is the magnifier that is covered. Inside surface of it.
> They may have had some new paint composition on SNO-T to withstand high temperatures
> and humidity.
>
> 2. SNO-M and SNO-T are radically different designs (the first one is the clone of C. Plath,
> the second of Freiberger). The most conspicuous feature of Freibergers and SNO-T is the
> completely enclosed worm. Can this have something to do with "tropicalization"?
> To prevent some insects entering between the arc and the worm??
> :-)
> I always thought thsat most of those tiny insects live in Canada and Soviet Arctic regions:-)
>
> What else could they mean?
>
> Does anyone know when Freiberger started to produce sextants?
> I have never seen pre WW II Freibergers.
>
> Alex.
>
>
>
> 
> 
>
>


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https://navlist.net/What-does-it-mean-tropicalized-Gebhart-oct-2014-g29056

   

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