box chronometer movement

A very steady clock in a padded box, it let a ship's navigator compare sea time with home time to find longitude.

Date

c1810

Maker

Joseph Manton

Place

United Kingdom: England, London

Dimensions

overall: 6 1/2 in x 6 1/4 in x 2 1/4 in; 16.51 cm x 15.875 cm x 5.715 cm

Museum

National Museum of American History

The museum's own record (Smithsonian, National Museum of American History)

Also made in London see all

Daniell HygrometerSpy GlassMicroscopePyrometer

Also answering “What time is it?” see all

Bond Marine ChronometerChronographSundialPortable EquatorialWatches, Army Air Corps, Avigation [Air Navigation], A-6Sundial compassTraveling sundial and compass