The tendency was already apparent to the naked eye. "I have heard tourists, the tower was not in the vertical - and they are right," said Professor John Burland, who was charged with the static measurements.
However, a danger of collapse for the bell tower is the only predicted that in 4000 years. From a slope like the Leaning Tower of Pisa, Big Ben is still far away. In Pisa, the imbalance was four degrees.
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