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    Re: mechanical chronometers
    From: hellos
    Date: 2006 May 15, 20:48 -0400

    Thank you, Robert. What are the typical figures for accuracy and for the
    stability of the rate in a marine chronometer? I know the rate of mechanical
    wristwatch chronometers can be adjusted by varying the position they are kept
    in, i.e. stem up/down, 12/6 up, etc. For those who take their watches off at
    night, this can be used to regulate the watch often to a difference of +-5
    seconds per day without the need to open them.
     I have over the years sometimes marked down the rates for various watches and,
    aside from the battery powered ones shifting as the battery was allowed to age,
    I can't really say I've noticed much fluctuation in them.

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