Some tachymeter/telemeter/pulsometer watches featured spiral-model “snailed” scales about the dial. For that Chronoscope, Omega opted for a far more symmetrical glimpse that contains a several concentric circles that come with the essential scale info although also not materially distracting from core dial legibility. Initial released in 1953, the Rolex Submariner https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/