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PICK UP / ruler


There is a slightly larger opening at one end of the ruler,makes it easy to pick up the ruler.
Generally, all the parts of a ruler is straight,makes it more difficult to grab or pick up it.Especially,when someone just finished cut her or his fingenails, this kind of situation is more difficult.So if there is a slightly larger opening at one end of theruler,we could grab or pick up it more easily,even if theone who just finished cut her or his fingenails.


Shandong University.

Shandong University.
Ji'nan, China

Gen Li,
Shandong University

Zheng Wang,
Hunan University

Tong Li,
Hunan University

Zuhe Li,
Hunan University