Timeline of notable events in the history of timekeeping devices
The timeline of time measurement inventions is a chronological list of particularly important or significant technological inventions relating to timekeeping devices and their inventors, where known.
Note: Dates for inventions are often controversial. Sometimes inventions are invented by several inventors around the same time, or may be invented in an impractical form many years before another inventor improves the invention into a more practical form. Where there is ambiguity, the date of the first known working version of the invention is used here.
Barnett, Jo Ellen (1999). Time's Pendulum: From Sundials to Atomic Clocks, the Fascinating History of Timekeeping and How Our Discoveries Changed the World (1st ed.). San Diego: Harcourt Trade Publishers. ISBN 978-01560-0-649-1.
Bergreen, Laurence (2003). Over the Edge of the World: Magellan's Terrifying Circumnavigation of the Globe. New York: Morrow. ISBN 978-0-06-621173-2.
Dolan, Winthrop W. (1975). A Choice of Sundials. Brattleboro, Vermont: The Stephen Greene Press. OCLC 471181086.
Landes, David S. (1985). Revolution in Time: Clocks and the Making of the Modern World. Cambridge, Massachusetts: Harvard University Press. OCLC 29148451.
Marrison, Warren A. (1948). "The Evolution of the Quartz Crystal Clock". Bell System Technical Journal. New York: AT&T. 27 (3): 510–588. doi:10.1002/j.1538-7305.1948.tb01343.x. OCLC 10999639. S2CID 88503681.