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最简单的尺 / The Easiest Ruler

最简单的尺
最简单的尺

The ruler is designed based on simple geometric relations, show us the most intuitive way of measuring diameter and circumference.

University

Yanshan University

Yanshan University
Qinhuangdao,Hebei, China

Design

Yanshan University

Yanshan University
Qinhuangdao,Hebei, China

Yunfei Su