Marine chronometer (English Wikipedia)

Harrison, John; Maskelyne, Nevil; Great Britain. Commissioners of Longitude (19 March 1767). "The principles of Mr. Harrison's time-keeper; with plates of the same". London, Printed by W. Richardson and S. Clark and sold by J. Nourse. Retrieved 19 March 2018 – via Internet Archive.
Landes, David S. (1983). Revolution in Time. Cambridge, Massachusetts: Belknap Press of Harvard University Press. pp. 165. ISBN 0-674-76800-0. Pierre Le Roy had developed the detached spring detent escapement around 1748, but abandoned the concept.
Britten, Frederick James (1894). Former Clock & Watchmakers and Their Work. New York: Spon & Chamberlain. p. 230. Retrieved 2007-08-08. Chronometers were not regularly supplied to the Royal Navy until about 1825
Golding Bird (1867). The Elements of Natural Philosophy; Or, An Introduction to the Study of the Physical Sciences. J. Churchill and Sons. pp. 545. Retrieved 2008-09-24.
Nathaniel Bowditch, Jonathan Ingersoll Bowditch (1826). The New American Practical Navigator. E. M. Blunt. pp. 179.

books.google.com

Arthur N. Cox, ed. (2000). Allen's Astrophysical Quantities (4th ed.). New York: AIP Press. p. 244. ISBN 978-0-387-98746-0. Retrieved 17 August 2010.
Heath, Byron (19 March 2018). Great South Land. Rosenberg. ISBN 9781877058318. Retrieved 19 March 2018 – via Google Books.
The maze of ingenuity: ideas and idealism in the development of technology Arnold Pacey New p.133ff [1]
Matthews, Michael R. (31 October 2000). Time for Science Education: How Teaching the History and Philosophy of Pendulum Motion Can Contribute to Science Literacy. Springer Science & Business Media. ISBN 9780306458804. Retrieved 19 March 2018 – via Google Books.
"isbn:0330532189 - Google Search". books.google.com. Retrieved 19 March 2018.
The principles of Mr Harrison's time-keeper
Britten's Watch & Clock Makers' Handbook Dictionary & Guide Fifteenth Edition p.122 [2]
Macey, Samuel L. (19 March 1994). Encyclopedia of Time. Taylor & Francis. ISBN 9780815306153. Retrieved 19 March 2018 – via Google Books.
Usher, Abbott Payson (19 March 2018). A History of Mechanical Inventions. Courier Corporation. ISBN 9780486255934. Retrieved 19 March 2018 – via Google Books.
Macey, Samuel L. (19 March 1994). Encyclopedia of Time. Taylor & Francis. ISBN 9780815306153. Retrieved 19 March 2018 – via Google Books.
Tony Jones (2000). Splitting the Second. CRC Press. p. 121. ISBN 0750306408.

Montgomery, Bruce G. "Keeping Precision Time When GPS Signals Stop". Cotts Journal Online. Archived from the original on 2011-06-09. Retrieved 2007-09-22.

"Precise Time and Frequency for Navy Applications: The PICO Advanced Clock". DoD TechMatch, West Virginia High Technology Consortium Foundation. Archived from the original on December 31, 2010. Retrieved 2007-09-22.

Koberer, Wolfgang (May 2016). "Notes: On the First Use of the Term "Chronometer"=". The Mariner's Mirror. 102 (2). United Kingdom: Society for Nautical Research: 203–205. doi:10.1080/00253359.2016.1167400. S2CID 164165009.
Koberer, Wolfgang (May 2016). "Notes: On the First Use of the Term "Chronometer"". The Mariner's Mirror. 102 (2). United Kingdom: Society for Nautical Research: 203–205. doi:10.1080/00253359.2016.1167400. S2CID 164165009.

Hall, Basil (1862). "Chapter XIV. Doubling the cape (from "Fragments of voyages and travels", 2nd series, vol. 2 (1832))". The Lieutenant and Commander. London: Bell and Daldy (via Project Gutenberg). OCLC 9305276. Retrieved 2007-11-09.

Norie, J. W. (1816). "To Find The Longitude of Chronometers or Time-Keepers". New and Complete Epitome of Practical Navigation. Archived from the original on 2015-09-07.

Koberer, Wolfgang (May 2016). "Notes: On the First Use of the Term "Chronometer"=". The Mariner's Mirror. 102 (2). United Kingdom: Society for Nautical Research: 203–205. doi:10.1080/00253359.2016.1167400. S2CID 164165009.
Koberer, Wolfgang (May 2016). "Notes: On the First Use of the Term "Chronometer"". The Mariner's Mirror. 102 (2). United Kingdom: Society for Nautical Research: 203–205. doi:10.1080/00253359.2016.1167400. S2CID 164165009.

A Chronology of Clocks Archived 2014-03-25 at the Wayback Machine
Norie, J. W. (1816). "To Find The Longitude of Chronometers or Time-Keepers". New and Complete Epitome of Practical Navigation. Archived from the original on 2015-09-07.
"International Convention on Standards of Training, Certification and Watchkeeping for Seafarers (with amendments)". International Maritime Organization. Archived from the original on 2007-07-03. Retrieved 2007-09-22.
Yachting Chronometer and Sextant, Accessed 25 May 2013, publisher=Nautische Instrumente
Montgomery, Bruce G. "Keeping Precision Time When GPS Signals Stop". Cotts Journal Online. Archived from the original on 2011-06-09. Retrieved 2007-09-22.
"Precise Time and Frequency for Navy Applications: The PICO Advanced Clock". DoD TechMatch, West Virginia High Technology Consortium Foundation. Archived from the original on December 31, 2010. Retrieved 2007-09-22.

Hall, Basil (1862). "Chapter XIV. Doubling the cape (from "Fragments of voyages and travels", 2nd series, vol. 2 (1832))". The Lieutenant and Commander. London: Bell and Daldy (via Project Gutenberg). OCLC 9305276. Retrieved 2007-11-09.