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    Re: Admiral GAGO Coutinho
    From: Costa Pinto
    Date: 2010 Oct 19, 21:27 +0100

    I'm going to try put some English sub-titles.
    
    Best regards
    Rui Miguel da Costa Pinto
    
    http://gagocoutinho.wordpress.com
    
    
    
    -----Mensagem original-----
    De: navlist-bounce@fer3.com [mailto:navlist-bounce@fer3.com] Em nome de Gary LaPook
    Enviada: terça-feira, 19 de Outubro de 2010 21:20
    Para: NavList@fer3.com
    Assunto: [NavList] Re: Admiral GAGO Coutinho
    
    
      I don't speak Portuguese but it was easy to interpret a caption at 
    19:35 into the video. It quotes John Glenn as saying that on the first 
    orbital flight  a modern sextant was carried that had been inspired by 
    the sextant created by Admiral Cortinho for aerial navigation.
    
    gl
    
    
    On 10/18/2010 2:43 PM, Douglas Denny wrote:
    >
    > Very interesting. Pity it does not have English sub-titles.
    >
    > I have one of these sextants. They are the first successful bubble 
    > sextant for aviation use. Basically a marine sextant modified with two 
    > standard type of bubble spirit level tubes: one to hold the sextant 
    > horizontal laterally, and the other to establish vertical.
    > The telescope is a bifocal allowing a view of the normal index and 
    > horizon mirrors as normal, and the bubble arrangement at the same 
    > time. Hence the telescope views at infinity for index/horizon, and a 
    > few cm for the bubble at the same time. Quite simple, but ingenious.
    > There is a battery (in the handle) and lamp system to illuminate the 
    > bubbles.
    >
    > Douglas Denny.
    > Chichester. England.
    > ----------------------------------------------------------------
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