The two leading specialised horological museums in North America are the National Watch and Clock Museum in Columbia, Pennsylvania, and the American Clock and Watch Museum in Bristol, Connecticut.
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Other horological museums in the London area include the Clockmakers' Museum, and the horological collections at the British Museum, the Science Museum (London) and at the Wallace Collection.
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In horology, the company Jean Lassale designed a watch movement that used ball bearings to reduce the thickness of the movement.
In addition to his many other achievements, he developed a lifelong passion for horology and became the leading authority in his lifetime on the work of the famed French maker Abraham-Louis Breguet, who is generally acknowledged as the greatest watchmaker of all time.
Jonathan Betts MBE (born 29 January 1955) is Senior Specialist in horology at the Royal Observatory (National Maritime Museum), Greenwich, a horological scholar and author, and an expert on the first marine timekeepers created by John Harrison in the middle of the 18th century.
After a first career as a restorer of Egyptian antiquities, Burgess turned to horology and clock-making and has specialized in building innovative and gigantic clocks, often with a detached escapement.
The National Watch and Clock Library is one of the world's pre-eminent libraries devoted to horology and is located in Columbia, Pennsylvania, USA.
It was acclaimed by Jonathan Betts, the Senior Curator of Horology at the Royal Observatory, Greenwich as "the nearest approach to perfection by any mechanical timekeeper not employing a vacuum chamber".
In spite of two more nervous breakdowns he wrote and published an eclectic series of books on topics ranging from horology to the Loch Ness Monster.