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: Sextant manufacturers
    From: Michael Daly
    Date: 2007 Oct 25, 14:31 -0400

    George Huxtable wrote:
    > One example, not on Alex's list, is Sewill, of Liverpool, who describes
    > himself on the label as "Maker to the Royal Navy". Sewill "made" my own
    > Vernier sextant, which appears in all respects to be a rebadged Heath clone,
    > but lacking their endless-tangent feature, introduced into Heath's own
    > instruments around the same time.
    Given the need to have a frame that behaves well in terms of strength,
    stiffness, temperature change etc, once a design is proven, it will be
    copied as soon as the patent has expired.  I suspect, but can't prove,
    that some of these apparent clones are actually independently
    manufactured.  Looks alone can't determine whether or not a maker has
    simply rebadged an instrument.
    In the case of a maker such as Spencer, Browning & Rust, it was known
    and documented that they had a good dividing engine and so graduated
    instruments (or parts, such as ivory scales) for others.  Thus the SBR
    logo appears on instruments made by others.  That isn't rebadging.  On
    the other hand, since manufacturing was a cottage industry in the early
    days, specialists would make parts only (e.g. all-wood frames) and sell
    the part to any that want them.  These parts could then be assembled by
    a vendor.  This is similar to the manufacture of high-end bicycle gear
    from makers like Italy's Campagnola (at least in the 1970s) or high-end
    Swiss watches.
    Distinguishing rebadging versus contracting would be tricky without a
    lot of digging into the records of such companies.
    To post to this group, send email to NavList@fer3.com
    To unsubscribe, send email to NavList-unsubscribe@fer3.com

    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