Lever escapement

Quote from Wikipedia:
The lever escapement, invented by British clockmaker Thomas Mudge in 1754 (albeit first used in 1769), is a type of escapement that is used in almost all mechanical watches, as well as small mechanical non-pendulum clocks, alarm clocks, and kitchen timers.
Escapements were invented already before our year zero. But mechanical escapements were invented in the 13th century. Thomas Mudge improved it.
Thanks to Laurie54 for hosting the Mono Monday challenge.