1620-1630 This clock-watch strikes the hours and has an alarm. The magnificent dial shows the sate and the age and phase of the moon (top), the months, seasons and quarter-hours (right) and the days of the week (left). The dial at the bottom shows the time and alarm setting. Jean Vallier, Lyon, France Fusee, verge escapement, balance (spring later)
aperture=f6.3 focal length: 60.0 mm exposure 1/500 sec ISO: 3200