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Can straight rulers draw angles? Angler CAN. It creates new ways to draw angles instead of the triangles - by folding the soft-material ruler, "angler" can easily draw angles such as 30°,45°,60°,90°.
"Angler" is made of soft-material , it appears to be a normal soft ruler, however , when you need to draw some particular angles such as 30°,45°,60°, 90°, etc, just simply fold the ruler and by matching the points marked on the ruler ,you can get the exact angle you want.
Guangqian Li,Shan Guan,Shichun Wang,Minjia Wang