"Orologio" at the St. Mark's Square Tower, Venice - Antica Orologeria Zamberlan
Website of Antica Orologeria Zamberlan, Italy. Extensive technical and historical explanation of the restoration and controversy of the "Orologio" Tower at St. Mark's Square, Veni…
Abbey Clock Clinic - Mark Headrick's Horology Page
Traditional horology website with information and mantainance tips. Technical descriptions and troubleshooting of escapements. Grandfather clocks, wall clocks, and watches.
Allan Variance -- Overview by David W. Allan
Core algorithm of international time scale has multiple metrology applications, from atomic clock frequency characterization to definition of the meter. Equation, explanation and …
Antique Horology
The Horological Foundation's directory of web sites for watches, clocks, instruments and barometers.
Cumbria Clock Company
Company specialized in all aspects of work connected with church clocks, public clocks, and tower clocks which includes the full historical restoration of antique clock movements.
Daylight Saving Time
History of daylight saving time and how we use it to save energy.
How Stuff Works: Time
Complete five-part explanation of time and how it is measured, including information about clocks, time zones, calendars, BC and AD.
How The Days of the Week Got Their Names
A short history of the week and each day of the week.
Jens Olsen's Astronomical Clock
Description of the restoration of Jens Olsen's Astronomical Clock, a masterpiece in Copenhagen City Hall that consists of 15.448 individual parts.
Leap Year Frequently Argued Questions
A humorous approach towards explaining the nature of leap years, in particular why 2000 is a leap year.
Mark Frank's Home Page
Website showing the restoration of a french flat bed tower clock in great detail, step by step, as well as other information and links of tower clock sites.