Some tachymeter/telemeter/pulsometer watches featured spiral-model “snailed” scales about the dial. For the Chronoscope, Omega opted for a far more symmetrical glimpse that incorporates a couple of concentric circles that come with the important scale details although also not materially distracting from Main dial legibility. Sinn T50 I've been on a https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/