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: Fluids for Bubble Sextants and Sealing Methods
    From: Herman Dekker
    Date: 2015 Dec 28, 11:48 -0800

    Hello Robert,

    Any idea how long the A-12 bubble chamber keeps the xylene in, if it is properly sealed?

    I have one A-12 bubble chamber with een small screw that has a beveled point in the
    bubble chamber there is a beveled drilling that fits the point. It has a normal head for
    flat screwdriver. The other bubblechamber has the standard screw with ball.

    One other question about the A-12.
    There are two filters for the sun, a light and a darker filter.
    The problem I have is, that the first filter that can be used, is the darkest filter then the lighter
    filter. I think they are mounted reverse?

    The former owner must have fiddeled with the sextant, because it is about 13 degrees to low on the scale.

    I think I have to disassemble the sextant to solve this problem?



    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