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: What is a "Class A" sextant?
    From: Brad Morris
    Date: 2014 Jan 21, 15:28 -0500

    On second thought, the Class B and the 120 degree error box are preprinted.  So failing to have a 120 degree range cannot knock you from A to B


    On Jan 21, 2014 3:25 PM, "Brad Morris" <bradley.r.morris@gmail.com> wrote:

    That may be true.

    My Class A is measured 8 times every 15 degrees to 120 degrees.

    Yours is too.  I note the 1 arc minute at 120 degrees, which pushes the limit in accuracy to 1', from 30".

    The class B is every 30 degrees.  I note one other, maybe significant, delta.  The cert is only to 105 degrees.  Perhaps 120 (+) is required!


    On Jan 21, 2014 3:18 PM, "Dave Walden" <waldendand@yahoo.com> wrote:

    A class a certificate. 8 measurements vice 4?
    NavList message boards and member settings: www.fer3.com/NavList
    Members may optionally receive posts by email.
    To cancel email delivery, send a message to NoMail[at]fer3.com

    Attached File:

    (KewClassA.JPG: Open and save)

    View and reply to this message: http://fer3.com/arc/m2.aspx?i=126600

    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