41. Dent s chronometers accompanied some of the 19th century s most influential explorers. 42. Marine chronometers were as revolutionary in the 19th century as GPS is today. 43. After digging around his yard, Hank finds the golden chronometer for Vernon. 44. They will have a new design and amenities, and more accurate chronometers . 45. Stopwatches are now passe; computerized NASA-level chronometers now time American racehorses. 46. Englishman who invented the chronometer . ( b) 47. Spring-driven chronometers must be wound at about the same time each day. 48. This eliminates chronometer error and watch error corrections. 49. The new clock was potentially suitable for navigational uses ( longitude by chronometer ). 50. As the son of a Swiss horologist Guillaume took an interest in marine chronometers .
