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

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    Re: Bygrave slide rule , o-rings, circular slide rules
    From: NavList
    Date: 2008 Dec 28, 08:25 -0800

    Hi,
    I'm very interested in traditional celestrial nav.Not a member of Navlist yet but will join.
    I would like to build a working model of the Bygrave slide rule.Could anyone 
    send me details of the their designs/scale printing software etc?
    Many thanks
    Francis Upchurch
    UK
    -------------------------------------------------
    [Sent from archive by: francis-AT-pharmdoc.co.uk]
    
    
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