Some tachymeter/telemeter/pulsometer watches featured spiral-model “snailed” scales within the dial. For the Chronoscope, Omega opted for a more symmetrical appear that incorporates a couple of concentric circles that come with the vital scale info though also not materially distracting from Main dial legibility. This watch is actually a sleek piece https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/