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: Telescope Collimator MK-VI
    From: Frank Reed
    Date: 2013 Jul 15, 12:15 -0700

    You wrote:
    "Is this item used to calibrate bubble sextants?"

    I'm not entirely sure what it was for. In the photos it's labeled "Telescope Collimator Mk VI Checking Telescope Support for Telescope Mk. L" which doesn't really make a whole lot of sense all by itself. The seller's description says, "This is a Checking Telescope, that was used on the U.S.N. MK-9 Collimator system. It was used for setting the correct angles and alignment of the collimators that were attached to the collimator arms." which, it it's accurate, could imply that this might have been used as a tool for checking the alignment of the apparatus that would have been used for testing the arc error of nautical sextants --so two steps removed from a sextant itself. But it's really hard to say unless you could find someone who actually used one. I did some searching just now in the usual places, and they only returned this auction.

    -FER

    ----------------------------------------------------------------
    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
    ----------------------------------------------------------------

       
    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