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Seesaw Ruler was made by a pliable but strong bamboo piece and a rubber piece with a scale.
Its hard for people to pick up an ordinary ruler when it was placed on the desktop. But Seesaw ruler can be easily picked up because the bamboo was bent slightly due to the force of the rubber piece.
When our hand placing on the Seesaw Ruler, the ruler being slightly pressed and is naturally turn to flat. And the rubber piece was stretched to the standard scale at the same time.
Being soft reduction, the ruler can not be easily moved, which made us can easily and accurately draw line segments or measure the length.
Pan Yu,Qiu Yiwu,Yuan Sisi,Xu Sisi,Luo Zhening,Sun Xin,Qian Manqian,Ouyang Chenling,Wu Fangyuan,Shao Shiyi, Chen Si,Lin Zhenyu,Chen Fan