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ruler design / ruler

ruler design
ruler design

This is a ruler design. With a common ruler, it is usually hard to finish a straight line on the paper without leaving any ink marks,because to some extent, we can hardly to avoid moving the ruler the paper before taking it up.
Now ,with the new one,you can easily take it up while no inks left. You just need to push the other side down and this side will be lifted.

University

jiangnan university of China

jiangnan university of China
wuxi, China

Design

jiangnan university of China

jiangnan university of China
wuxi, China

ID1,school of design ,jiangnan university of China Lihu Road No.1800, Wuxi,Jiangsu,China 214122 wuxi, China