Bond Box Chronometer

Description
This is a 56 hour chronometer with a later pattern Earnshaw spring detent escapement, and indications for hours, minutes, seconds, and up and down. It dates from around 1880. The chronometer bears the inscription "William Bond & Son, Boston" and "Bond's Break Circuit." The movement, like that of most Bond chronometers, was probably made in England, while the Bond break circuit mechanism was made in the U.S. The Department of Physics at Columbia University donated this instrument to the Smithsonian in 2001. The winding key is marked "512" and is thus from a different piece.
Location
Currently not on view
Object Name
chronometer, contact
Measurements
overall: 11 5/16 in x 13 1/16 in x 11 3/16 in; 28.702 cm x 33.1978 cm x 28.448 cm
ID Number
2001.0162.01
catalog number
2001.0162.01
accession number
2001.0162
subject
Measuring & Mapping
Navigation
See more items in
Medicine and Science: Physical Sciences
Navigation
Data Source
National Museum of American History, Kenneth E. Behring Center

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