This ancient Chinese dragon shaped device was constructed with a sequence of bells tied to a horizontally mounted burning incense. When the burning incense burnt and broke the threads, the bells fell down at preset interval to give an alarm.
This picture was taken by Kowloonese in July 2004 from an exhibition at Chabot Space & Science Center in Oakland, California. The head of the dragon was not visible due to the flash reflected off the glass case.
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A replica incense alarm clock This ancient Chinese dragon shaped device was constructed with a sequence of bells tied to a horizontally mounted burning incense. When the burning incense burnt and broke the threads, the bells fell down at preset interval