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Alex - I have a Mk IX bubble sextant and the modern type C batteries
fit in fine with room to spare. Do you have a Mk IX bubble sextant
and are you saying modern C batteries do not fit into it?

Or are you confusing the British made Mk IX with the American made
Link A-12, which will not accept the modern C cell?

Geoffrey Kolbe

At 01:44 12/02/2007, you wrote:


>Size C won't provide as much amperage over time as the Ds; ie, they
>won't last as long.  The Ds also can supply more peak amperage, but
>that usually isn't a consideration with lights.
>
>Alkaline batteries usually last longer than carbon-zinc batteries,
>but there can be subtle changes in size that can make them less
>suitable.  Everready "Classic" batteries are the old-type carbon zinc
>for which American instruments would have been designed.
>
>Fred
>
>On Feb 11, 2007, at 8:04 PM, alex wrote:
>
> >
> > As I understand the batteries exactly fitting this sextant MkIX
> > are not produced anymore.
> > What sort of batteries can be used?
> > My (superficial) investigation shows that C-size batteries
> > are likely to fit in diameter. How many are needed?
> > The batteries only have to feed 2 bulbs.
> > Are these 3 volts or 1.5 volts bulbs?
> >
> > In general, what is the difference between size C and size D
> > batteries? Both are 1.5 volts, but size C is smaller.
> >
> > Alex.
> >
> >
> > >
>
>
>
Border Barrels Ltd, Newcastleton, TD9 0SN, UK
Tel: +44 (0)13873 76253   Fax: +44 (0)13873 76214


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