Timing to 1/5 second. 

Timing up to 30 minutes. 

Timing telephone conversations. 

Pulsimeter scale (S). 

The pulsimeter scale shows at a glance the number of pulse beats per minute. The observer releases the chronograph hand when starting to count the beats and stops at the 30th, the 20th or the 15th beat according to the basis of calibration indicated on the dial. The hand shows at a glance the number of pulse beats per minute.