Welcome to the NavList Message Boards.


A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding

Compose Your Message

Add Images & Files
    Re: question on air sextant MKIX
    From: Geoffrey Kolbe
    Date: 2007 Feb 12, 06:31 +0000

    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.
    >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
    To post to this group, send email to NavList@fer3.com
    To unsubscribe, send email to NavList-unsubscribe@fer3.com

    Browse Files

    Drop Files


    What is NavList?

    Join NavList

    (please, no nicknames or handles)
    Do you want to receive all group messages by email?
    Yes No

    You can also join by posting. Your first on-topic post automatically makes you a member.

    Posting Code

    Enter the email address associated with your NavList messages. Your posting code will be emailed to you immediately.

    Email Settings

    Posting Code:

    Custom Index

    Start date: (yyyymm dd)
    End date: (yyyymm dd)

    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site
    Visit this site