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M-Compasses / compasses

M-Compasses
M-Compasses

M-Compasses increase the efficiency and raise the accurency in mathmatic drawing and measuring. Usually, before using the compasses, users must put the needle and nib onto the ruler and carefully match the scale, and then carefully keeping the angle until drawing down a circle.
M-Compasses transfers the angle to distance(calculated from trigonometric function). Thanks to the structure, the M-Compasses can also be good at measuring, don’t need to perfectly match the line to the ruler, just putting the head to the end of the line.

University

East China Normal University

East China Normal University
Shanghai, China

Design

Yi Wei, Xu

Yi Wei, Xu
Shanghai, China

Rujun, Sun Huizhu, Zhang