Quartz Clock

Quartz Clock

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Usage conditions apply
This clock was built at the U. S. Naval Observatory about 1936 as part of an experimental program to control time signals transmitted by radio. It is a quartz clock, that is, it depends on a specially cut piece of quartz crystal to keep time. The search for a better timekeeper than the best pendulum clocks led to the development of quartz-crystal clocks, the first of which telecommunications engineers at Bell Telephone Laboratories built in 1927 to monitor and control frequencies.
Currently on loan
Object Name
clock, quartz
Other Terms
clock; Electronic (Quartz); Free-Standing Clock
date made
Physical Description
metal (amplifying apparatus material)
metal (time indicating mechanism material)
overall: 44 1/2 in x 20 in x 17 1/2 in; 113.03 cm x 50.8 cm x 44.45 cm
ID Number
catalog number
accession number
Credit Line
Transfer from U.S. Naval Observatory
See more items in
Work and Industry: Mechanisms
Measuring & Mapping
Time and Navigation
Data Source
National Museum of American History
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