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Have you ever cut your finger on a cutter while cutting with a ruler?
Let me introduce ‘Safe Ruler’ for you.
‘Safe Ruler’ separate outside of using cutter and hand.
Therefor you don’t have to worry about cutting your finger while working.
Also on each surface is engraved various units.
It helps efficient working.
Hoseo University
Asan-si, Chungcheongnam-do, South Korea
Yun Jung Kim,
Hoseo University
