The standard contains a classification of time keeping instruments and terms of types of watches and clocke to distinguish the different types of time keeping instruments.
DIN 8235-1:1989 history
1989DIN 8235-1:1989-07 Classification and design of time keeping instruments; terms of types of watches and clocks
1989DIN 8235-1:1989 Classification and design of time keeping instruments; terms of types of watches and clocks