Some tachymeter/telemeter/pulsometer watches featured spiral-fashion “snailed” scales on the dial. For the Chronoscope, Omega opted for a far more symmetrical glimpse that contains a handful of concentric circles that include the vital scale information when also not materially distracting from Main dial legibility. Commencing generation simultaneously as the ref. 6200, https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/