Welcome to the NavList Message Boards.

NavList:

A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding

Compose Your Message

Message:αβγ
Message:abc
Add Images & Files
    or...
       
    Reply
    Re: Bris Sextant
    From: Doug Royer
    Date: 2005 Nov 7, 16:06 -0800

    This also would explain another "deficiency" the 8 images if Sun
    that I see are not aligned on one vertical line.
    
    However I don't see how it could affect precision, and don't think it
    does.
    
    On my opinion, the only limitation of precision is the absence of
    the scope. If one attaches the scope, the attachment should certainly
    have a collimation adjustmeent (rotating the Bris part around a vertical
    axis). With such adjustment, I do not see why Bris device will be less
    precise than ordinary sextant.
    (Of course I do not mention again its other limitations).
    
    Alex.
    
    Alex, I've followed this thread from the start. Glad you got one of these
    Bris "sextants" as they are a great and a unique tool. I found mine in a
    chandler's shop in San Pedro, Ca. a few years ago and have used it many
    times. I carry mine in an old aluminum film canister when not in use. I also
    took a pair of glasses, popped the lens out and attached a wire clip
    arrangement to hold the Bris to the frames while useing.
    
    
    

       
    Reply
    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