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30度平行 / 30degree Parallel

30度平行
30度平行

Controlling the knife blade length appropriately may lead to usethe utility knife adversely or cut paper not straightly, and even knife blade splitting danger.
While using a utility knife, often didn't adjust into the appropriate knife blade
length so that cause knife blade splitting, even eruptive danger. Therefore,
we engrave the knife blade with match marks of knife blade length and paper
thickness. In addition, we take a knife line as the unit with 1 mm, it lets users
can compute conveniently, and slice the knife hull 30 degrees of parallel knife
line to mark to let users align knife blade and use utility knife more easily.

University

台灣科技大學

台灣科技大學
Taipei, Taiwan

凱揚 鄒,
明志科技大學