Hi Rob,
Two would give you SOME confidence if they read the same, and at least
you would know to be wary if they didn't. With
three, you can use a majority voting system, and that is what we do (although
we are not at sea!)
Peter Vince (London, England)
On Fri Oct 24 5:31 , Rob Seaman <[EMAIL PROTECTED]> sent:
> From Jack London, a question: "Why did you sail with only one
>chronometer?"
>
> http://catless.ncl.ac.uk/Risks/25.41.html#subj10
>
>If two chronometers are "no better than one", why are three better
>than two?
>
>Rob Seaman
>National Optical Astronomy Observatory
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