33
/
AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
November 1, 2025
1052056
322331
2
Public Timelines
FAQ Get premium

Several important watch inventions - George Graham invented mercurial compensation pendulum and dead-beat escapement for clocks, John Harrison invented grid-iron compensation pendulum and George Graham invented the cylinder escapement. (jan 1, 1720 – jan 1, 1750)

Added to timeline:

Date:

jan 1, 1720
jan 1, 1750
~ 30 years