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    Re: Some Link A12 Sextant Questions
    From: David Pike
    Date: 2018 Jan 25, 14:33 -0800

    Geoffrey Kolbe wrote: The problem is the cast alloy cap to the battery container, which takes the bulb. In my experience, the inside diameter of this needs to be enlarged (bored out with a lathe) to enable modern batteries to fit

    I forgot the cap fitted inside the cylinder. 
    However, I’ve just checked. My widest Duracell C battery at 0.999” diameter is still a loose fit inside the cap.  I wonder if some kind person bored mine out in the past.  However, the published standard diameter of C batteries is 1.03”, whereas the inside of my cap varies from 1.018” to  1.028”, so maybe it’s worth trying a few different makes of battery. DaveP

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