Telechron
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Telechron was an American company that manufactured electric clocks between 1912 and 1992. "Telechron" is derived from the Greek words tele, meaning "far off," and chronos, "time," thus referring to t
Telechron 355 "Cathedral" (1927–32)
Telechron 2H07-Br "Administrator" (1937–40)
Telechron 7F72 "Heralder" (1930s)
Telechron 8B23 "Register" (1946–48)
Quartz clock
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Quartz clocks and quartz watches are timepieces that use an electronic oscillator regulated by a quartz crystal to keep time. The crystal oscillator, controlled by the resonant mechanical vibrations o
Telechron
…not depending on the proximity of a power outlet, and do not require the often somewhat unattractive electric cable. Furthermore, the accuracy of the quartz clock superseded the principles of the synchronous motor. GE tried to respond to the declining market for Warren's technology by producing cheaper, less…
A basic analog quartz clock
Modern quartz wristwatch
Circuit board of an e block from a chronograph-wristwatch. The quartz crystal oscillator can be seen on right.
Disassembled analog quartz clockwork; quartz crystal oscillator (top left), Lavet-type stepping motor (left) with a black rotor sprocket and connected white and transparent gears (right). These gears control the movement of the second, minute and hour hands.