Some tachymeter/telemeter/pulsometer watches showcased spiral-type “snailed” scales on the dial. With the Chronoscope, Omega opted for a more symmetrical glimpse that contains a couple concentric circles which include the critical scale data although also not materially distracting from core dial legibility. Later examples can be found from the large 4 https://www.watchesworld.com/frozen-in-time-luxury-watches-for-winter/