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2. Quartz clock - Wikipedia

   en.wikipedia.org/wiki/Quartz_clock

   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]

3. Telechron - Wikipedia

   en.wikipedia.org/wiki/Telechron

   Telechron electric alarm clock. Telechron alarm clocks are particularly popular with collectors. Until about 1940, the overwhelming majority of Telechron alarm clocks had bell alarms. The entire mechanism was enclosed in a bell housing of steel. Atop the clock's coil was a metal strip that vibrated at 60 cycles per second when the alarm was ...

4. Kit-Cat Klock - Wikipedia

   en.wikipedia.org/wiki/Kit-Cat_Klock

   An original model clock with packaging from the 1940s A newer black model clock displays four paws. The Kit-Cat Klock is an art deco novelty wall clock shaped like a grinning cat with cartoon eyes that swivel in time with its pendulum tail. It is traditionally black, but models in other colors and styles are also available.

5. Electric clock - Wikipedia

   en.wikipedia.org/wiki/Electric_clock

   Telechron synchronous electric clock manufactured around 1940. By 1940, the synchronous clock became the most common type of clock in the United States. An electric clock is a clock that is powered by electricity, as opposed to a mechanical clock which is powered by a hanging weight or a mainspring.

6. List of clock manufacturers - Wikipedia

   en.wikipedia.org/wiki/List_of_clock_manufacturers

   Lenzkirch Clock Co (Aktiengessellschaft fur Ukrenfabrikation) (1851-1929) factory operated by Junghans 1929-1932; Mauthe Clock Company (c1870 - 1976) Jakob Schlenker Grusen, Schwenningen (JSGUS/ISGUS) (1888–present) Johannes Schlenker, Schwenningen (1822-1883) then Schlenker and Kienzle (1883-1897) then Kienzle

7. The best gifts for the mom who keeps telling you she wants ...

   www.aol.com/lifestyle/best-gifts-mom-2024...

   If you're shopping for mom, we've rounded up a few of our favorite Christmas gifts for 2024, including Storyworth, personalized calendars, and more.