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90 Degree Vertical Ruler / Ruler

90 Degree Vertical Ruler
90 Degree Vertical Ruler

Ruler is an important tool of drawing and measuring, however, it could not meet the demand fully facing some special problems in the work. For example, in the work, we always need to measure the both sides of the object in the meanwhile. Repeated measurement could increase the error and reduce the efficiency. 90 degree vertical ruler is a new ruler which could fold into 90 degree, which could realize the meanwhile measurement of two vertical surface, and increase the accuracy and efficiency of measurement and drawing. In the meanwhile, the widened ruler is more accurate on the two points of marked both edges.

University

Dalian Nationalities University

Dalian Minzu University
Dalian, China

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Design

Dalian Nationalities University

Dalian Minzu University
Dalian, China

Ying Wang,Zhenyi Zhang,Guoxing Deng,Song Qiao

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