Keep in each chronometer case or in a book nearby the error and daily rate of all chronometers on board.
"Lectures in Navigation"
Ernest Gallaudet Draper
Weather conditions were more important in determining a day's run than the hands of the chronometers.
"My Attainment of the Pole"
Frederick A. Cook
The chronometers may be, and probably are, far off.
"My Attainment of the Pole"
Frederick A. Cook