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Angle ruler / stationery

Angle ruler
Angle ruler

Angle ruler is the combination of straightedge rule
and goniometer .Its advantages is to draw point more accurate and moreconvenient,besides,
you can konw the degree of an angle as well as Its length .

University

Nanjing art institute

Nanjing art institute
nanjing, China

Design

Nanjing art institute

Nanjing art institute
nanjing, China

Geng Zhendong Wang Dan