Shortt–Synchronome clock (English Wikipedia)

"Lot 412 / Sale 6070: An English electric observatory regulator". Auction sale record. Christie's auction house website. November 25, 1998. Retrieved 2009-12-29.

clockvault.com (Global: low place; English: low place)

"The Riefler and Shortt clocks". JagAir Institute of Time and Technology. Retrieved 2009-12-29.

doi.org (Global: 2^nd place; English: 2^nd place)

Marrison, Warren (1948). "The Evolution of the Quartz Crystal Clock". Bell System Technical Journal. 27 (3): 510–588. doi:10.1002/j.1538-7305.1948.tb01343.x. Archived from the original on 2014-02-28.

electric-clocks.eu (Global: low place; English: low place)

Bosschieter, J. E. (2000). "Shortt's free pendulum". A History of the Evolution of Electric Clocks. Bosschieter website. Retrieved 2009-12-30.

escholarship.org (Global: 1,477^th place; English: 863^rd place)

Alvarez, Luis W. (July 1977). Alfred Lee Loomis 1887-1975: A biographical memoir (Report). U.S. Energy Research and Development Administration. pp. 15–17. Archived from the original on 30 October 2020.

fas.harvard.edu (Global: 2,293^rd place; English: 2,027^th place)

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Ketchen, Richard (February 2008). "Shortt free-pendulum regulator, primary clock no. 17, Inventory Number: 1998-1-0187a". Collection of Historical Scientific Instruments. Dept. of History of Science, Harvard Univ. Archived from the original on 2011-07-19. Retrieved 2009-12-30.

hsn161.com (Global: low place; English: low place)

Boucheron, Pierre H. (April 1985). "Just how good was the Shortt clock?". The Bulletin of the National Association of Watch and Clock Collectors. 27 (2–235). Columbia, PA: NAWCC: 165–173. ISSN 0027-8688. book ID 8247;
cited in "Bibliography". Boucheron – NAWCC 235. Rolling Ball Web (Report). book ID 8247. Archived from the original on 8 August 2010.

ieee-uffc.org (Global: low place; English: low place)

Marrison, Warren (1948). "The Evolution of the Quartz Crystal Clock". Bell System Technical Journal. 27 (3): 510–588. doi:10.1002/j.1538-7305.1948.tb01343.x. Archived from the original on 2014-02-28.

leapsecond.com (Global: low place; English: low place)

Boucheron, Pierre H. (March 1986). "Effects of the gravitational attractions of the Sun and Moon on the period of a pendulum" (PDF). Antiquarian Horology. 16 (1). Ticehurst, East Sussex, UK: Antiquarian Horological Society: 53–65. ISSN 0003-5785. Retrieved 13 December 2013.

marcdatabase.com (Global: low place; English: low place)

Boucheron, Pierre H. (April 1985). "Just how good was the Shortt clock?". The Bulletin of the National Association of Watch and Clock Collectors. 27 (2–235). Columbia, PA: NAWCC: 165–173. ISSN 0027-8688. book ID 8247;
cited in "Bibliography". Boucheron – NAWCC 235. Rolling Ball Web (Report). book ID 8247. Archived from the original on 8 August 2010.

measuringworth.com (Global: 3,470^th place; English: 1,768^th place)

United Kingdom Gross Domestic Product deflator figures follow the MeasuringWorth "consistent series" supplied in Thomas, Ryland; Williamson, Samuel H. (2026). "What Was the U.K. GDP Then?". MeasuringWorth. Retrieved April 1, 2026.

mla.gov.uk (Global: low place; English: low place)

Betts, Jonathan (May 22, 2008). "Expert's Statement, Case 6 (2008–09) William Hamilton Shortt regulator". Export licensing hearing, Reviewing Committee on the Export of Works of Art and Objects of Cultural Interest. UK Museums, Libraries, and Archives Council. Archived from the original (DOC) on October 25, 2009. Retrieved 2009-12-29.

sciencemuseum.org.uk (Global: low place; English: 8,101^st place)

"Atomic Clocks, p. 6". Online Stuff. Science Museum, Kensington, UK, website. 2008. Retrieved 2009-12-29.

web.archive.org (Global: 1^st place; English: 1^st place)

Marrison, Warren (1948). "The Evolution of the Quartz Crystal Clock". Bell System Technical Journal. 27 (3): 510–588. doi:10.1002/j.1538-7305.1948.tb01343.x. Archived from the original on 2014-02-28.
Betts, Jonathan (May 22, 2008). "Expert's Statement, Case 6 (2008–09) William Hamilton Shortt regulator". Export licensing hearing, Reviewing Committee on the Export of Works of Art and Objects of Cultural Interest. UK Museums, Libraries, and Archives Council. Archived from the original (DOC) on October 25, 2009. Retrieved 2009-12-29.
Ketchen, Richard (February 2008). "Shortt free-pendulum regulator, primary clock no. 17, Inventory Number: 1998-1-0187a". Collection of Historical Scientific Instruments. Dept. of History of Science, Harvard Univ. Archived from the original on 2011-07-19. Retrieved 2009-12-30.
Alvarez, Luis W. (July 1977). Alfred Lee Loomis 1887-1975: A biographical memoir (Report). U.S. Energy Research and Development Administration. pp. 15–17. Archived from the original on 30 October 2020.
Boucheron, Pierre H. (April 1985). "Just how good was the Shortt clock?". The Bulletin of the National Association of Watch and Clock Collectors. 27 (2–235). Columbia, PA: NAWCC: 165–173. ISSN 0027-8688. book ID 8247;
cited in "Bibliography". Boucheron – NAWCC 235. Rolling Ball Web (Report). book ID 8247. Archived from the original on 8 August 2010.

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Boucheron, Pierre H. (April 1985). "Just how good was the Shortt clock?". The Bulletin of the National Association of Watch and Clock Collectors. 27 (2–235). Columbia, PA: NAWCC: 165–173. ISSN 0027-8688. book ID 8247;
cited in "Bibliography". Boucheron – NAWCC 235. Rolling Ball Web (Report). book ID 8247. Archived from the original on 8 August 2010.
Boucheron, Pierre H. (March 1986). "Effects of the gravitational attractions of the Sun and Moon on the period of a pendulum" (PDF). Antiquarian Horology. 16 (1). Ticehurst, East Sussex, UK: Antiquarian Horological Society: 53–65. ISSN 0003-5785. Retrieved 13 December 2013.

Shortt–Synchronome clock (English Wikipedia)

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