Some tachymeter/telemeter/pulsometer watches featured spiral-style “snailed” scales around the dial. For your Chronoscope, Omega opted for a more symmetrical look that incorporates a handful of concentric circles that come with the crucial scale information and facts when also not materially distracting from core dial legibility. Later on examples are available https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/