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- Topic: Timekeeping
Displaying 51 - 56 of 56
Artifact
Used to provide radio time signals to ships and aircraft.
Photograph
This station was one of the first to make radio time signals available.
Artifact
The clock from the Spirit of St. Louis.
Illustration
Marine chronometers are key-wound, spring-driven timekeepers that are more precise than most others mainly because of several special features.
