Query: Chronometer
Archives Center, National Museum of American History

.075, Two chronometer rate reports

Archives Center, National Museum of American History

Chronometer assembly

Archives Center, National Museum of American History

Assembly casing

Smithsonian Institution Archives

Finding aid

Archives Center, National Museum of American History

Finding aid

Archives Center, National Museum of American History

Calculations

Smithsonian Institution Archives

Finding aid

Smithsonian Institution Archives

Finding aid

Smithsonian Institution Archives

Finding aid

Smithsonian Institution Archives

Finding aid

Archives Center, National Museum of American History

Charles Francis Hall Collection: 1858-1871.

Smithsonian Institution Archives

Finding aid

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