links for 2011-09-21

  • Equipped with a pocket watch that was certified by the Greenwich Observatory every week, Ruth Belville sold the time to the clockmakers of London. She performed this duty between the years 1836 and 1840, helping these clockmakers set their products according to the watch, which was set to within a tenth of a second of Greenwich Mean Time. Belville is the subject of a new book.
    (tags: time history cool)
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