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: Japanese Bygrave slider rule on Ebay
    From: Francis Upchurch
    Date: 2014 Jan 13, 03:24 -0800

    Tom,
    I am a Bygrave enthusiast with an original AML Mk 11A circa 1920s in perfect condition I was lucky to get reasonably cheaply on ebay in UK 4 years ago.From that, I built a homemade replica for use at sea. I would be very interested in seeing any photos etc of your Japanese model and any history about their use during the war. My seller said he thought mine had been used in a Lancaster bomber during WW2, but I have no hard evidence. The RAF chief "pathfinder" navigator used one, but they were not general issue, cel nav reductions being done in RAF with The new Air almanac or Weem's star curves. (neither as good or as fast as the Bygrave ,in my opinion!).There were apparently many more Japanese and German ones made, so perhaps they were in more general use on their side? Does anyone know?
    Happy to supply pictures and details of mine on request.
    Like the idea of a Bygrave Museum!
    Best wishes,Francis
    ----------------------------------------------------------------
    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