Some tachymeter/telemeter/pulsometer watches highlighted spiral-design “snailed” scales around the dial. For your Chronoscope, Omega opted for a far more symmetrical look that incorporates a number of concentric circles which include the critical scale information whilst also not materially distracting from Main dial legibility. 6200 and ref. 6205. There may be https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/