Multiple-Purpose Chronograph Chronograph Functions index
Timing up to 1.5 second.
Timing up to 30 minutes.
Timing telephone conversations.
Tachometer scale (Q).
Pulsimeter scale (S).
Telemeter scale (R).
The dial of this chronograph has several scales for various purposes. The illustration shows one of the many combinations that can be supplied.
Q = Tachometer scale
R = Telemeter scale
S = Pulsimeter scale