NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Visit to Freiberg
From: Courtney Thomas
Date: 2005 May 23, 09:06 -0500
From: Courtney Thomas
Date: 2005 May 23, 09:06 -0500
What is backlash ?
Without going to Germany, how do you know if it's a problem with your
sextant ?
Can you [yourself] approximately 'measure' it's significance with your
sextant and correlate turning said 'screw', recheck and approximate a
satisfactory adjustment ?
Not that I plan to start fiddling around with it, but, I have a SNO-T,
which included in the box a handful of small tools. Which tool is used
to adjust backlash ?
Appreciatively,
Courtney
On Mon, 2005-05-23 at 06:47, Alexandre Eremenko wrote:
> On Sat, 21 May 2005, Robert Eno wrote:
>
> > What did they do to your sextant to fix the backlash problem?
>
> They turned a special skrew:-)
> The SNO-T manual only says: never turn this screw yourself:-)
> (I recall that Freiberger and SNO have a "drum" ("trommel")
> assembly which is different from most other sextants.
> So now I know that this misterious screw is for the backlash
> adjustment).
>
> It is not clear to me what exactly is inside the "trommel",
> and how it works. The manual prohibits to disassemble it
> on the ships, but a special wrench for doing this is included.
>
> Alex.
