Technical: Co-Axial Escapement
The first clock, a simplistic, water-powered device, is believed to have been invented around the 16th century BC. The first mechanical escapement came around the 11th century. Spring-driven clocks appeared on the scene in the 1400s. In 1584 came the cross-beat escapement, and in 1670 the anchor escapement; the lever escapement, still used today, followed in the 18th century, and with it the first watch accurate enough to navigate by. The development of horology is slow to the point of being glacial, with generations passing between each major breakthrough. In 1974, this generation was party to the next big leap forward.