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Thanks for these information; As far as I can see from the drawings which are at
http://www.geocities.com/petanoz/aviation/celestnav.htm, the bubble chamber is
lacking on my sextant...
But that is surprising, because on mine I wonder how the bubble chamber could be
fixed,and seen from the eyepiece at that place; indeed, at that place there is
only a very little hole where a very little light is screwed in.

Best regards

Guillaume BARTHELEMY



Selon Noell Wilson :

> I don't know of a manual online but there is a photo at
> http://www.geocities.com/petanoz/aviation/celestnav.htm
> that shows the location of the bubble chamber.
> You may wish to search the Nav-L archives for Kollsman and for the word
> pellicle for some more information on the bubble.
> Regards, Noell
>
> >>> jeanphilippeplanas@YAHOO.COM 12/20/2005 2:26:24 PM >>>
> Hi
>   Are you able to power the instrument with 28V?
>   JPP
>
> Me Guillaume BARTHELEMY  wrote:
>   Hi,
> Being new borned in astronomic navigation, I bought on e-bay a Kollsman
> Periscopic sextant.
> Unfortunately, I can't manage to see the bubble throw the eyepiece. Is
> anyone could tell me where is the bubble chamber or could help me.
> Thanks a lot.
> Guillaume BARTHELEMY.
>
>
>
>
> JPP
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