Sign up for an Award
Participate with your entry in one of our professional or student awards.Sign up for an award
You are using an outdated browser. Please upgrade your browser to improve your experience.
The unique pen cap’s edge design can make it perfectly fit with both the papers and tables.Its similar triangualr prism moudle with scales like a dividing ruler.Pen cap is an integral part of ruler.And with such design,people can use it as a ruler anytime anywhere.When one runs out of the ink,one can throw the pen body away and collect the pen caps and inset them together to become a longer ruler.Thus the garbage is change to cowry.
Guangdong Ocean University