Some tachymeter/telemeter/pulsometer watches featured spiral-model “snailed” scales about the dial. With the Chronoscope, Omega opted for a far more symmetrical search that encompasses a couple concentric circles that come with the significant scale facts though also not materially distracting from Main dial legibility. Tag Heuer Carrera 'Glassbox' Chronograph I have https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/