Monday 10 January, 2011 - 11:20 AM EST
In 1930, when sportsmen begun to demand chronographs, Rolex started to fulfill that demand. Seven years later, Rolex catalogue shows for the first time the chronographs wristwatches. Rolex chose 10- ½” to 14” movements in one button models allowing the customers to time a single continuous event. The demand came not only from racing spectators, but also from anyone whose profession required having an accurate measuring of and exact elapsed time.
In the late 30s, the real breakthrough happened as a consequence of the two button configuration making possible for the customers to stop the timing for breaks in the action.
The “Zerograph” is one of the most interesting Rolex Chronographs. It was produced in very limited quantities at the end of the 1930s. It had a 10-1/2”’ Hunter sweep seconds movement, it was the first model to feature the Oyster crown.
Afterwards, the first Oyster Chronograph was the model 4500. Models: 6232 and 3668 followed model 4500 and the proved to be as unpopular as the first one. The reason: the depths of World War II.
After years of making imperceptible and trivial changes, Rolex reached the final watch: The Cosmograph (model 6239), one of the most popular watches ever produced.
In the late 1970s, when Rolex introduced the 6263 Cosmograph, the model was the first to have truly waterproofed pushers. The screw down pushers were added because the customers kept trying to operate the push buttons while the watch was underwater so that let water into the movement. Another advantage of the locking buttons was that it also prevented inadvertent operation pushers.
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