(of clocks or watches)
41Balance spring — A balance spring, or hairspring, is a fine spiral or helical spring used in mechanical watches, marine chronometers, and other timekeeping mechanisms to control the rate of vibration of the balance wheel. A balance spring usually has a regulator… …
42John Harrison — Infobox Scientist name = John Harrison |300px image width = 260px caption = P.L. Tassaert s half tone print of Thomas King s original 1767 portrait of John Harrison, located at the Science and Society Picture Library, London birth date = birth… …
43George Graham (Uhrmacher) — George Graham (1673–1751) George Graham (* 7. Juli 1673 in Horsgill im parish von Kirklinton, Cumberland, England; † 16. November 1751 in London) war ein englischer Uhrmacher, auf den eine Reihe wichtiger Entwicklungen zurückgeht …
44Museum of Decorative Arts in Prague — Founded in 1885, the Museum of Decorative Arts in Prague is housed in a Neo Renaissance edifice built in 1897–1901 after the designs of architect Josef Schulz. The Museum’s rich collections include decorative and applied arts and design work… …
45Bernard Mason — OBE (b. 1895, d. 1981) was a prominent Colchester businessman and philanthropist who was born in Ipswich but lived his whole life in Colchester. He was the proprietor of Mason s printing firm from which he retired as director in 1962. [http://www …
46History of Coventry — Two of Coventry s three spires; Holy Trinity Church on the left, and the spire of the old ruined cathedral (St. Michael s) on the right This article is about the history of Coventry, a city in the West Midlands, England. From its humble… …
47Japanese clock — A nihongo|Japanese clock|和時計|wadokei is a mechanical clock that has been made to tell traditional Japanese time. Mechanical clocks were introduced into Japan by Jesuit missionaries or Dutch merchants in the sixteenth century. These clocks were of …
48Electric clock — An electric clock is a clock that is powered by electricity instead of powered manually or by other sources of energy, specifically in order to wind the mainspring or to drive the pendulum or oscillator. ClassificationThere are actually four… …
49History of timekeeping devices in Egypt — The Ancient Egyptians were one of the first cultures to widely divide days into generally agreed upon equal parts, using early timekeeping devices such as sundials, shadow clocks, and merkhets mdash;plumb lines used by astronomers of the… …
50Decimal time — French decimal clock from the time of the French Revolution Decimal time is the representation of the time of day using units which are decimally related. This term is often used to refer specifically to French Revolutionary Time, which divides… …
