Видео с ютуба John Harrison Chronometer

John Harrison's "H1" clock in action

A Detailed Study of H4 - John Harrison's Longitude Timekeeper Reconstruction

Longitude - TV movie 2000

John Harrison's "H2" clock in action

The First Chronometer. John Harrison & The Clock That Changed the World

The Clock That Changed the World (BBC History of the World)

The Longitude Problem - Improving Navigation with the Harrison Clocks

The longitude problem: history's deadliest riddle

A model of the remontoire action on John Harrisons longitude watch H4

Should we stop the Harrison clock?

The Clockmaker Who Changed the World: John Harrison's Impact on Navigation

John Harrison's "H3" clock in action

Amazingly accurate clock finally recognised after 300 years - Guinness World Records

Ships, Clocks & Stars: Assembling the H3 replica

Twin Pivot Grasshopper Escapement - invented by John Harrison

John Harrison's fourth timekeeper

John Harrison and his solving of ‘The Longitude Problem’

What IS Longitude? | Earth Science

COMITTI - The Navigator Clock

The Inventive Genius of John Harrison | Dr. John C Taylor OBE FREng