First watch

The invention of a portable time-keeping device c. 1509 is attributed to Peter Henlein (Germany), designer of the “Nuremberg Egg” – a small, drum-shaped clock (with only an hour hand) that could be carried. References to a “pocket clock” have since been discovered that predate this invention by 40 years, but Henlein is credited with being the first person to manufacture such devices and introduce the concept of regular time-keeping – an essential tool for the “modern” world.