Thacker’s chronometer was accurate to six seconds a day, falling well short of the three seconds a day required to win the 20 thousand pound “King’s Ransom” offered by the English Board of Longitude in the 1700s. It was coined by the English clock-maker Jeremy Thacker in 1714 to describe his design of a clock entombed in a vacuum chamber that protected the movement from the vagaries of humidity and atmospheric pressure. The word ‘chronometer’ has had an equally long association with observatories. In fact, there is evidence that Omega’s owners, the talented and visionary Brandt family, viewed the development of chronometers as a natural next step in the company’s horological journey.Īstronomical observatories have long had an association with time measurement because of its earlier critical importance to longitude, and latter, it’s significance to astrophysics and cosmology. This beautifully engineered and built timepiece impressed all with its precision, and the company decided to enter it in major chronometer competitions in Geneva, Neuenberg and Teddington, UK. In the 1930s, Omega developed the Caliber 30.10 mm movement. How does the current Railmaster compare to the original from 1957?.What are the features of the Railmaster?.What are the features of the Seamaster Aqua Terra?.Is the newer Seamaster Pro dial design easier to read at night?.Is that wavy pattern on the dial distracting?.
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