Marine Chronometers provides a comprehensive history of this intriguing piece of navigational equipment, tracing its evolution from the early navigational aids into the precision instrument that helped shaped trade and economic development for 200 years. The workings of the device are explained in detail, along with highlights of some of the most significant makers and hints for maintenance. Topics covered include the problem of longitude, the early sea clocks, developments in France and England, the mechanism of the chronometer,  and caring for chronometers.