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    Re: Timing Lunars with a Rock
    From: Jared Sherman
    Date: 2005 Jul 17, 21:37 -0400

    Frank, iirc  if the length of
the pendulum is some precise length (vaguely16 inches?) the period *will* be
one second. So if you can find out the correct pendulum length and carry
that bit of strong with your sextant......

Obtaining a willing "native" may be a bit harder these days.
       
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