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    Re: R: Refilling Mk IXA Bubble Sextant
    From: Zvi Doron
    Date: 2004 Feb 26, 13:41 -0000

    Thanks for the instructions Giuseppe,
    Just a few clarifications please:
    I Intend to take the bubble mechanism out of the sextant's left half frame
    by unscrewing the 3 holding screws. It seems that it will be easier to work
    this way. Is that how you done it, or is there any advantage in doing it
    with the bubble mechanism attached to the frame?
    The sodering point at the top of the cylinder - do you unsolder it, or cut
    it off?
    I am not sure what you mean by "reverse the sextant". My inclination is to
    do the whole operation with the top of the vertical cylinder pointing up? or
    do you mean forward to backward? sorry if I sound stupid...
    Do you hapen to have that PDF file that Robert Eno generated?
    Thanks again
    ----- Original Message -----
    From: Giuseppe Menga 
    Sent: 26 February 2004 08:58
    Subject: R: Refilling Mk IXA Bubble Sextant
    I did the job for myself.
    These are the steps I followed:
    1) make sure the chamber is dry.
    2) open the soldering point and with a syringe fill on the hexane.
    3) the quantity is not critical (I filled up completely), however if you
    leave the
        hole open it will shortly evaporate a little bit.
    4) loading and unloading the diafram fill the visible chamber with liquid.
    5) then, reverse the sextant and load the diafram, just a little - the
    bobble will appear
    6) if the bubble is too big in the right position tilt the sextant so that
    the bubble         finish on the border at hour 10 (in the view your
    left-up) - you see a small dent     in the border  of the     chamber and
    release the diafram the bubble will             slowly disappear.
    7) if the bubble size is ok release the diafram with the bubble away from
    the dent     on the border
    8) when every thing is ok resold the hole.

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