![Royal Museums Greenwich on Twitter: "Our 100 day trail of 'Clock B' won @GWR for 'most accurate mechanical clock with a pendulum swinging in free air'! http://t.co/m3pnorYlOz" / Twitter Royal Museums Greenwich on Twitter: "Our 100 day trail of 'Clock B' won @GWR for 'most accurate mechanical clock with a pendulum swinging in free air'! http://t.co/m3pnorYlOz" / Twitter](https://pbs.twimg.com/media/CCzhG6ZWgAAAyqh.jpg)
Royal Museums Greenwich on Twitter: "Our 100 day trail of 'Clock B' won @GWR for 'most accurate mechanical clock with a pendulum swinging in free air'! http://t.co/m3pnorYlOz" / Twitter
![Burgess Clock B, The World's Most Precise Pendulum Clock, Is Made To A 250-Year-Old Design By John Harrison, Longitude Prize Winner And Inventor Of The Marine Chronometer - Quill & Pad Burgess Clock B, The World's Most Precise Pendulum Clock, Is Made To A 250-Year-Old Design By John Harrison, Longitude Prize Winner And Inventor Of The Marine Chronometer - Quill & Pad](https://quillandpad.com/wp-content/uploads/2017/07/Clock-B-Martin-Burgess-Frodsham-1.jpg)
Burgess Clock B, The World's Most Precise Pendulum Clock, Is Made To A 250-Year-Old Design By John Harrison, Longitude Prize Winner And Inventor Of The Marine Chronometer - Quill & Pad
![Mute Mantel Clock, Solid Wood Antique Pendulum Clock, Accurate Travel Time, Durable, for Living Room Decoration, Fireplace, Desk Relojes de chimenea: Wall Clocks: Amazon.com.au Mute Mantel Clock, Solid Wood Antique Pendulum Clock, Accurate Travel Time, Durable, for Living Room Decoration, Fireplace, Desk Relojes de chimenea: Wall Clocks: Amazon.com.au](https://m.media-amazon.com/images/I/71U9pAz2VLS._AC_UF894,1000_QL80_.jpg)
Mute Mantel Clock, Solid Wood Antique Pendulum Clock, Accurate Travel Time, Durable, for Living Room Decoration, Fireplace, Desk Relojes de chimenea: Wall Clocks: Amazon.com.au
![LEGO Technic pendulum clock that can run accurately for more than a year - The Brothers Brick | The Brothers Brick LEGO Technic pendulum clock that can run accurately for more than a year - The Brothers Brick | The Brothers Brick](https://s3-us-west-2.amazonaws.com/media.brothers-brick.com/2020/06/LEGO-Clock.jpg)