Some tachymeter/telemeter/pulsometer watches featured spiral-design and style “snailed” scales to the dial. For your Chronoscope, Omega opted for a more symmetrical appear that features a few concentric circles which include the important scale info whilst also not materially distracting from Main dial legibility. Later illustrations can be found in the https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/