Rolex YachtMaster
From Chronopedia
Rolex YachtMaster
In 1985 Rolex had filed for a patent for a ‘Chronometer for starting races, particularly regattas’. The single hand chronograph described has the dial divided in a first sector from 12 to 6 o’clock for the first 9,5 minutes of the countdown, and a second sector from 6 to 12 o’clock for the final 30 seconds. Thus the hand would move at a low speed first, to change to a higher speed during the last half minute. Credits - http://www.regatta-yachttimers.com/brands/rolex/
