Marine chronometer
device · 1761 · Industrial Revolution
Harrison’s precise clock for finding longitude.
Inventor: John Harrison.
What it is made of
- Balance wheel — has part. The pace is set by a temperature-compensated balance.
- Bimetallic strip — has part. Harrison invented the bimetal strip to compensate for temperature.
Principles and materials it uses
- Brass — is made of. The movement is brass.
History: what it evolved from and what it influenced
- Pocket watch — evolved from. Harrison moved from large clocks to the pocket-sized H4.
What it is a kind of
- Mechanical clock — is a kind of. A marine chronometer is a very accurate mechanical clock that sailors used to find longitude.