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London-based Swiss watchmaker patents the first practical chronograph

Britain and British Affairs, iconic image
05/14/1862
Adophe Nicole, a Swiss-born watchmaker now with a workshop in Soho Square in London, had in 1844 taken out a patent on a clock that could be stopped and restarted.  His1862 British patent was an improvement on this to the point that his chronograph, which could be stopped, restarted, and reset, immediately made it possible to record elapsed time with great accuracy, the advent of the modern stopwatch.  (By John Osborne) 
Source Citation: 
The Repertory of Patent Inventions and other discoveries and improvements ... (London: Alexander Mackintosh, 1862), XL: 505 

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How to Cite This Page: "London-based Swiss watchmaker patents the first practical chronograph," House Divided: The Civil War Research Engine at Dickinson College, http://hd.housedivided.dickinson.edu/node/39166.