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    Precision clock
    From: Geoffrey Kolbe
    Date: 2008 Jan 08, 10:10 +0000

    I am trying to use a theodolite with which I am trying to take precision
    sightings on stars, but a limiting factor is that virtually all quartz
    clocks/watches only tick off the whole seconds, which immediately limits me
    to 0.25 minutes of longitude.
    Is there a stopwatch out there that can be set to GMT so will act as a
    chronometer over a period of weeks or months, but has a feature where a
    button can be pressed  and the display will show the time at which the
    button was pressed to a tenth of a second or better? Then, at another press
    of a button, current time is displayed once again in the normal way.
    Geoffrey Kolbe
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