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    Re: Drum Sextants
    From: Ken Muldrew
    Date: 2005 Jun 16, 09:49 -0600

    On 15 Jun 2005 at 18:44, Frank Reed wrote:
    > I've also noticed that some Plath sextants don't  include a little vernier
    > scale for reading off tenths of minutes. But in  practice, I find that this
    > matters relatively little. I can read to 0.2 minutes  (which is as good as
    > it gets, in my practical experience) with or without the  vernier scale.
    It's the same with my Tamaya. When I first got it I thought about adding
    some vernier ticks (although since the zero mark is centered I would have
    had to make plus and minus ticks). It didn't take long to realize that
    estimating the fractional minutes to the nearest 5th, or even 10th, was
    quick, easy, and not likely to be the limiting factor in my observations
    for many years to come.
    Ken Muldrew.

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