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  2. Rockwell Automation Headquarters and Allen-Bradley Clock ...

    en.wikipedia.org/wiki/Rockwell_Automation...

    This was scaled back, however a smaller tower on an existing building was kept and modified to display the outdoor temperature using a large digital display. The interest in creating the tower was Harry Bradley, younger of the firm's two founding brothers. An inventor, Bradley including in his tinkering several of the clocks which he owned.

  3. List of largest clock faces - Wikipedia

    en.wikipedia.org/wiki/List_of_largest_clock_faces

    A list of permanent working clocks with the largest faces in the world. Entries include all clocks with faces at least 4 m (13 ft) in diameter. Clocks can be located on the exterior or interior of buildings, and towers as well as on the ground as is the case with floral clock faces.

  4. Atmos clock - Wikipedia

    en.wikipedia.org/wiki/Atmos_clock

    Older Atmos clock. The first clock powered by changes in atmospheric pressure and temperature was invented by Cornelis Drebbel in the early 17th century. Drebbel built as many as 18 of these, the two most notable being for King James VI & I of Britain, and Rudolf II of Bohemia. The King James clock was known as the Eltham Perpetuum, and was ...

  5. List of largest cuckoo clocks - Wikipedia

    en.wikipedia.org/wiki/List_of_largest_cuckoo_clocks

    The world's largest cuckoo clock since 1997, according to the Guinness Book of Records. Schonachbach (Triberg, Germany). Several unusually large cuckoo clocks have been built and installed in different cities of the world with the aim of attracting visitors, as part of publicity of a cuckoo clock shop, or to serve as a landmark for the community and town.

  6. Cox's timepiece - Wikipedia

    en.wikipedia.org/wiki/Cox's_timepiece

    Cox's timepiece is a clock developed in the 1760s by James Cox. It was developed in collaboration with John Joseph Merlin (with whom Cox also worked on developing automata ). Cox claimed that his design was a true perpetual motion machine , but as the device is powered from changes in atmospheric pressure via a mercury barometer , this is not ...

  7. Digital clock - Wikipedia

    en.wikipedia.org/wiki/Digital_clock

    Digital clocks typically use the 50 or 60 hertz oscillation of AC power or a 32,768 hertz crystal oscillator as in a quartz clock to keep time. Most digital clocks display the hour of the day in 24-hour format; in the United States and a few other countries, a commonly used hour sequence option is 12-hour format (with some indication of AM or PM).

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