Caption: An astrolabe, a type of early scientific instrument used for reckoning time and for observational purposes
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 16.66 MB

Caption: The anchor escapement, which was invented in the 17th century, allowed pendulum clocks to be regulated
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 27.49 MB

Caption: The verge-and-foliot was the most common mechanism for controlling the descent of a weight in a weight-driven clock
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 41.14 MB

Caption: Typical components in a watch powered by a mainspring
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 16.66 MB

Caption: The typical components of a quartz watch
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 14.03 MB