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ancient Chinese earthquake detection contraption

ancient Chinese earthquake detection contraption by .kaishin..
displayed in the Lobby of the Lisboa Hotel & Casino.

the way it works, when the vase is shaken with vibration from the earth, the marble in the dragon's mouth will drop, falling into the metal frog with the open mouth, making a loud clang, thus detecting the earthquake. 

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view photos Uploaded on August 16, 2007
by .kaishin.

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