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: mechanical chronometers
    From: hellos
    Date: 2006 May 15, 20:48 -0400

    Thank you, Robert. What are the typical figures for accuracy and for the
    stability of the rate in a marine chronometer? I know the rate of mechanical
    wristwatch chronometers can be adjusted by varying the position they are kept
    in, i.e. stem up/down, 12/6 up, etc. For those who take their watches off at
    night, this can be used to regulate the watch often to a difference of +-5
    seconds per day without the need to open them.
     I have over the years sometimes marked down the rates for various watches and,
    aside from the battery powered ones shifting as the battery was allowed to age,
    I can't really say I've noticed much fluctuation in them.

    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