Some tachymeter/telemeter/pulsometer watches featured spiral-design “snailed” scales to the dial. For the Chronoscope, Omega opted for a far more symmetrical glimpse that features a couple of concentric circles that come with the vital scale data while also not materially distracting from core dial legibility. Tag Heuer Carrera 'Glassbox' Chronograph I've https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/