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Early time clock, made by National Time Recorder Co. Ltd. of Blackfriars, London at Wookey Hole Caves museum A Bundy clock used by Birmingham Corporation Transport. An early and influential time clock, sometimes described as the first, was invented on November 20, 1888, by Willard Le Grand Bundy, [4] a jeweler in Auburn, New York.
Early versions erred by less than one minute per day, and later ones only by 10 seconds, very accurate for their time. Dials that showed minutes and seconds became common after the increase in accuracy made possible by the pendulum clock. Brahe used clocks with minutes and seconds to observe stellar positions. [112]
The next 3 decades saw the development of quartz clocks as precision time standards in laboratory settings; the bulky delicate counting electronics, built with vacuum tubes, limited their use elsewhere. In 1932 a quartz clock was able to measure tiny variations in the rotation rate of the Earth over periods as short as a few weeks. [39]
Produced Post Office/Official Government Vienna Regulators. Some clocks signed "Kreutz & Bauer in Wein". Gebr. Resch, Ebensee, Austria. Used trademark "REMEMBER". Factory began 1862 in Vienna, moved to Ebensee 1871. Produced up to 15,000 clocks in 1885. Factory sold to Junghans 1901 & renamed "Uhrenfabrik Ebensee Austria". Johann Mold, (c. 1870 ...
Today, their clocks are highly collectible in Canada and command twice the price of similarly styled clocks by well-known American counterparts. One of the aspects that interests collectors is the high number of variants. Collectors can hunt for time-only, time and strike, or either of these with calendar.
Beginning in 1943, Westclox and other companies introduced clocks for the civilian market that used much less brass than previously. Clocks were labeled as "Waralarm" by Westclox and only referenced city of origin; no mention of maker appeared. Other clock companies also produced clocks that were labeled "War Alarm", such as Gilbert and Telechron.