Jonathan D. Betts
Contributor
Curator of Horology, Royal Observatory Greenwich, National Maritime Museum.
Primary Contributions (31)
Big Ben, tower clock, famous for its accuracy and for its massive bell. Strictly speaking, the name refers to only the great hour bell, which weighs 15.1 tons (13.7 metric tons), but it is commonly associated with the whole clock tower at the northern end of the Houses of Parliament, in the London…
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