These are organized by a classification scheme developed exclusively for Cosma. More…
Horology, Science of time, timekeepers, and timekeeping: The Index (National Association of Watch and Clock Collectors), The Watch Quote, Time Measurement & Frequency Standards, Time Services, GPS Time Series, etc. (Martindale’s Reference Desk), Time (Library of Congress), Time and Date.com, Dates & Times (Wolfram Alpha)
chronology : the science that deals with measuring time by regular divisions and that assigns to events their proper dates — Webster
time : (1) the thing that is measured as seconds, minutes, hours, days, years, etc. (2) a particular minute or hour shown by a clock — Webster
Time is the indefinite continued progression of existence and events that occur in apparently irreversible succession from the past through the present to the future. It is a component quantity of various measurements used to sequence events, to compare the duration of events or the intervals between them, and to quantify rates of change of quantities in material reality or in the conscious experience. Time is often referred to as the fourth dimension, along with the three spatial dimensions. It has long been a major subject of study in religion, philosophy, and science, but defining it in a manner applicable to all fields without circularity has consistently eluded scholars. — Wikipedia
A Walk Through Time The evolution of time management through the ages (A NIST Physical Measurement Laboratory Presentation)
On Time : How America has learned to live by the clock (Smithsonian National Museum of American History)
History of Timekeeping (About.com)
The History of Timekeeping (Beagle Software)
horology : the art of making instruments for indicating time — Webster
US Time and Frequency Standards (Time & Frequency Division, National Institute of Standards & Technology)
Official U.S. Time and other useful things (NIST and VSNO)
Precise Time (U.S. Naval Observatory)
Watch Collecting (Discover a Hobby)
Confessions of a Watch Geek (Gary Shteyngart, The New Yorker)
The Modern Gentleman’s Guide To Starting A Watch Collection (Linette Lopez, Business Insider)
The engineer’s chronometer. William Wilson and...
by Blog Coordinator on April 16, 2020 at 3:41 pm
Last Summer I bought on eBay this fusee chain driven watch with detent escapement, dia 50mm, hallmarked Chester 1858, signed on the movement ‘William Benton of Liverpool, No. 5115’, and on the dial ‘Chronometer watch by William Benton 148 … Continue reading →
Put down your pens. The Oxford Examinations...
by Blog Coordinator on February 6, 2020 at 10:03 am
Located on the High Street, in the heart of Oxford, the Oxford Examinations School was built between 1876 and 1882 and made the reputation of its architect, Thomas Jackson, who incorporated materials from old buildings to construct the school. Among … Continue reading →
Was there high-quality, wholesale, clock movement...
by Blog Coordinator on December 9, 2019 at 10:02 am
There is a fascinating article in the latest edition of Antiquarian Horology, just starting to arrive through people’s letterboxes, setting out a remarkable research question which cries out for some crowdsourcing of data—hence this blog post. For those who don’t … Continue reading →
The second edition of Synchronome: Masters of...
by James Nye - Council Member on October 9, 2019 at 3:03 pm
This post was written by Charles Ormrod. Robert Miles’s landmark work, Synchronome: Masters of Electrical Timekeeping, sold out a few years after its original publication in 2011. Since then, copies of this highly sought-after book have been selling … Continue reading →
The Unexpected Visitor
by Blog Coordinator on July 19, 2019 at 8:11 pm
Jonathan Betts. Almost exactly ten years ago I had John Harrison’s magnificent first marine timekeeper H1 in my workshop at the Royal Observatory. It was being dismantled for study, cataloguing and conservation for the new chronometer catalogue. I had a film crew with me … Continue reading →