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尺子 / Ruler

尺子

This is a can circle ruler, compass and straightedge will combine the functions together.

University

Tianjin university of science and technology

Tianjin university of science and technology
China, China

Design

Tianjin university of science and technology

Tianjin university of science and technology
China, China

HanJiang(Designer) BaiRenFei(Instructor)School of Mechanical Engineering ZhaoJunFen(Instructor)School of Mechanical Engineering