- As a rule, chronometer is never allowed to be stopped, except when accumulated error exceeds ten minutes.
- At this instant, the chronometer should be run down (which means allowed to come to a stop by not winding it), reset and restarted at the earliest opportunity.
- This is necessary because the hands of the chronometer should never be moved manually when the chronometer is working. They can be moved only when the chronometer is fully stopped.
- After it has run down, the hands should be set to the required time, the instrument wound, restarted and the error noted.
An eight-day chronometer should be wound even day or every seventh day as per the maker’s instructions.
