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: Kollsman periscopic sextant mount
    From: Gary LaPook
    Date: 2020 Feb 9, 22:09 -0800

    The Kollsman sextants originally came with clockwork averagers but most were replaced in the 1980's with computerized averagers. The computerized averagers require 24 volts but the old type work find on 6 volts or 12 volts, you just have to replace the bulbs. If you have the one that requires 24 volts for the averager there is no problem because there is a separate electrical input plut for the the averager so you can supply 24 volts to it and 3 or 6 or 12 volts to the light bulbs. The mount is set up to supply electricity to the sextant and, if necessarey, to the computer averager (the clockwork averager does not require an electrical input.) But you can feet electricity to the mount and the sextant separately, to the mount to illuminate the azimuth scale, and to the sextant to illuminate the altitude scale and the bubble. And then a seaparate input, if necessary, to an electronic averager.


    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