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Double glasses / Glasses

Double glasses
Double glasses

The DOUBLE GLASSES is a special magnifier which can adjust the thickness of lens so as to change the size of objects.The lens are made of a special kind of membrane that containing a certain amount liquid which can change the thickness of lens.The elders would see the objects clearly by pushing the red spanner on the side of the glasses which can change the thickness of lens.


Xi'an University of Technology

Xi'an University of Technology

Zhaohua ZHU,
Xi'an University of Technology