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It is difficult for us to find eraser when we need it. It is also inconvenient to transform between pencil and eraser.Erasy automatic pencil can solve the problem，It is composed by a eraser, a pencil whose lead can be pushed out by a slider. When we write,the slider is in the lower end of the pencil, when the eraser is needed,we slide the slider to higher end of the pencil, then we can use the eraser. Nib and lead both can replacement, it can be recycled.
ChangChun University Of Technology
changchun, China
Zhiang Chen,
ChangChun University Of Technology
Rui Wang,
ChangChun University Of Technology
Jieting Yao,
ChangChun University Of Technology
