Types
The original chronographs that Rieussec invented were called tape chronographs. They consisted of a tape that was constantly being dragged along at a controlled speed. When activated, a pen would be pushed onto the tape and begin recording until deactivated.
The two main types of modern day chronographs are the automatic chronograph and the digital chronograph. The difference between the two is that the automatic chronograph depends solely on kinetic energy as its power source, while the digital chronograph is much like the common stopwatch and uses a battery to gain power. Other, more specific, types of chronographs include calendar chronographs, split second chronographs, tachometer chronographs, telemeter chronographs, tide chronographs, and asthometer chronographs. Each of these chronographs has an added feature that sets them apart from the regular automatic or digital chronograph.
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