Welcome to the NavList Message Boards.

NavList:

A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Position-Finding

Compose Your Message

Message:αβγ
Message:abc
Add Images & Files
    or...
    Re: Ebay kollsman periscope sextants
    From: Paul Dolkas
    Date: 2018 Jun 7, 10:03 -0700

    Noel-

     

    Huh. I guess a little “stiction” goes a long way. I wonder if a drop of mercury in oil would suffer the same effect. Any physicists (or somebody with some mercury) have an opinion?

     

    Paul Dolkas

     

    From: NavList@fer3.com [mailto:NavList@fer3.com] On Behalf Of Noell Wilson
    Sent: Thursday, June 07, 2018 8:16 AM
    To: paul{at}dolkas.net
    Subject: [NavList] Re: Ebay kollsman periscope sextants

     

    Hi Paul,
    I tried the BB/ball bearing level several years ago and it didn’t work. As someone pointed out, there’s microscopic resistance to getting the ball rolling.

    http://fer3.com/arc/m2.aspx/How-not-level-an-AH-Wilson-jan-2014-g26645

    Regards, Noell

    View and reply to this message

    Browse Files

    Drop Files

    NavList

    What is NavList?

    Join NavList

    Name:
    (please, no nicknames or handles)
    Email:
    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:

    Email Settings

    Posting Code:

    Custom Index

    Subject:
    Author:
    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