It has a special design for deep-sea swimming and, like the Turn-o-graph, is equipped with a bezel for recording time. This "like the Turn-o-graph" shows that for Rolex, the rotating bezel was of a wide profile, and was originally developed for civilian watches. As can be seen from the patents for t
In February 1953, Rolex applied for a rotating bezel, the operation of which provided for a wider range than diving. In the patents CH312285 and CH305177 cited in the article, there are no lines about diving at all. This is due to the fact that initially this bezel was created for the Turn-o-Graph m