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Multi-angle ruler / Ruler

Multi-angle ruler
Multi-angle ruler

The ruler has a few anchor points to help you draw the angles of 15°30°45°60°...
Carrying such a ruler,you can draw these angles more easily and save the trouble of all the complicated triangle rulers.
A small change makes big differences.


ZheJiang Univercity

ZheJiang Univercity
Hangzhou, China


ZheJiang Univercity

ZheJiang Univercity
Hangzhou, China

Zeng Hui, Liu Lulu, Guo Jiahong, Chen Mai