What are the entries of Chronometer Log Book?

The column headings of Chronometer Log would usually be:

  • Date at Greenwich
  • GMT
  • Chronometer time error
  • Daily rate
  • The temperature (as read off a thermometer stored inside the padded compartment),
  • Source of the time signal (Portishead, Colombo, etc)
  • Initials of the observer

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