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    Re: wrapped Bygrave
    From: Wolfgang Hasper
    Date: 2010 Jan 18, 19:28 +0100

    Douglas, you wrote
    > It works, if the two scales are a different colour,
    > but there is a serious problem - confusion between
    > the closely packed scales one on top of the other it
    > is very easy to make a blunder.  I first made one
    > with the same black scales - and that was almost
    > impossible to use.
    This is true, having the scales red and black works OK,
    but you always have to have in mind if the red is to
    be read above the black or v.v.
    Just as with the regular flat implementation. At least
    it does not slip unintentionally any more.
    All you other points are familiar to me, a real
    reproduction would be the solution.
    So we are back to the tubes...

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