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Here is the link to the SNO-T manual:

http://www.fer3.com/arc/img/104361.cho-t+sextant+manual.pdf

cl

On Jul 21, 1:17 pm, "Gary LaPook"  wrote:
> The two L vanes are for checking the perpendicularity of the index mirror 
check Bowditch for the procedure. I beleve I posted the manual for the sno t 
a while ago to the archive where you can search for it and download it.
>
> GL
> Sent via BlackBerry from T-Mobile
>
> -----Original Message-----
> From: Thomas Kleemann 
>
> Date: Tue, 21 Jul 2009 01:27:12
> To: 
> Subject: [NavList 9156] Collimation test
>
> Hello all,
>
> someone, most probably Alex E., described a collimation test method for
> soviet era SNO sextants some time ago. May I ask for a recapitulation?
> Can't find it in the archive.
>
> And another question about SNOs: What are the two L-shaped diopters
> (диоптp) for?
>
> Thanks a lot.
>         Thomas.
>
>
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