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    Re: Sight Reduction Tables for Small Boat Navigation byHewittSchlereth
    From: Wolfgang Hasper
    Date: 2014 Jan 4, 23:43 +0100

    Nial and Brad,
    thanks for the compliments- that was me and I still
    have plenty tubes left :o)
    I don't mind if you hand over your set though, no
    While a lathe is fine and helpful, it is not a
    necessity. Trickiest bit being the tubes.
    For the locking mechanism's cam-disc, however, a laser
    cutter could be helpful. But rather as a perfection-
    my jigsaw work does the job perfectly well.
    Nial, you may wish to refer to my post of
    Mon, Mar 22, 2010 at 1:55 PM for details
    or contact me directly at
    wolfgang dot hasper at web dot de
    For the handle/base tube I have made myself a mandrel
    to secure it on the mill and machine the 20 grooves.
    works well :o)
    Am Samstag, 4. Januar 2014 22:52 schrieb Brad Morris:
    > Hi Nial
    > They are here somewhere.
    > The tricky bit is the set of tubes.  I purchased a
    > set but never used them.  I don't want to cut into
    > the NavList member who did the wholesale purchase
    > and distribution of these tubes.  He did all the
    > work and laid out all the cash.  His name escapes me
    > now.  However, his reproduction is masterful.  If he
    > has run out of sets or is unwilling to provide you
    > with a set,  you may have mine.  We can work out the
    > details later.
    > The scales are also here on NavList, for those
    > tubes.
    > Brad
    > On Jan 4, 2014 4:22 PM, "Nial McInerney"
    > > ------------------------------
    > >
    > > I would absolutely love to have a Bygrave or a
    > > MHRI but where can I get the instructions to make
    > > one? The thing is I have a lathe in the basement
    > > and am an experienced machinist so should be able
    > > to produce a good one if I knew how.
    > > Nial
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    > :
    > http://fer3.com/arc/m2.aspx?i=126164

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