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    Re: Bygrave slide rule , o-rings, circular slide rules
    From: Ronald van Riet
    Date: 2008 Jun 15, 14:29 -0700

    to all interested in Bygraves:
    
    I am writing a paper on the Bygrave and German wartime HR series of
    position line slide rules to be presented at the IM2008 to be held in
    Royal Leamington Spa near Birmingham, UK on 19-20 September. For full
    information on IM2008, see http://sliderules.lovett.com/uksrc/index.html,
    then click the link to IM2008. The paper will be part of the
    proceedings, available to all participants and likely to be for sale
    afterwards.
    
    There will be a wealth of information in this paper, much the result
    of my own research over the past year and never published before.
    
    Owners of Bygrave or HR1, HR2 or MHR1 slide rules are kindly requested
    to send me information on their specimen which I would like to include
    in the paper. Please contact me off list.
    
    Ronald
    
    On Jun 15, 8:39 am, bruce hamilton  wrote:
    > I was reading in the archives about the Bygrave slide rule, and one of
    > the posts mentioned that there was a link to printouts of the scales,
    > but I never found the link. If some one has it, could they send it to
    > me. As well, Geoffrey said he built one, and I would love to see
    > pictures of his project.  I might mock one up in cardboard if I can get
    > the scales.If I ever get around to mastering Solidworks, I could get one
    > made on a rapid prototyping machine. Perhaps Geoffrey has the g-code?
    >
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