Some tachymeter/telemeter/pulsometer watches featured spiral-fashion “snailed” scales over the dial. For that Chronoscope, Omega opted for a far more symmetrical search that includes a few concentric circles that come with the essential scale data although also not materially distracting from Main dial legibility. Piaget Blue and gray can be beautifully https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/