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    Re: Link A-12 Bubble Sextant - Bubble chamber replenishment
    From: David Pike
    Date: 2026 Sep 23, 14:08 -0700

    Luc Desmedt. Did you mean to write the Mk IX.  The A12 comes with a sealed chamber plus, if you're lucky, a spare.  Hence the need for a Bristol key to remove the grub screw to top the chamber up through.  Mk IXs certainly benefit from a full body massage. Just remember to hold them at 2 O'clock while you give it. DaveP

       
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