So when a cross - Atlantic test was finally arranged in 1761, he placed his full confidence, not in his third design, but in his fourth, a three - pound [1 kg] chronometer based on the pocket - watch design.
Niisiis, kui Atlandi ületamise katse 1761. aastal lõpuks ette võeti, ei pannud Harrison lootusi mitte oma kolmanda leiutise, vaid neljanda, kilogrammise kronomeetri peale, mis meenutas taskukella.