We love to build sport watches, especially multi-dial versions which today make up the majority of all the higher end luxury watch segment.
The term, Chronograph comes from the Greek word for time, "chronos", combined with the Greek word for writing, "graph". The first modern chronograph was invented by Louis Moinet in 1816 and it was solely for working with astronomical equipment. It was Nicolas Mathieu Rieussec who developed the first usable chronograph in 1821.
Back then, the king of France greatly enjoyed watching horse races, but wanted to know exactly how long each race lasted, so Rieussec was commissioned to invent a contraption that would do the job: as a result he developed the first working chrono graph.
The modern day chronograph works by pushing a start button, normally located at the two o'clock position, to begin recording time, and by pushing the same button to stop the recording. When the button is pushed to start the recording, a series of three (in more complicated and more precise chronographs there are more wheels) train wheels start turning. The smallest has a revolution time of one second, the next sixty seconds, and the final one has a revolution time of sixty minutes. The three train wheels interact with one another and record how long it has been since the start button has been activated.
More modern uses of chronographs involve piloting airplanes, car racing, diving and submarine maneuvering.