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Design Notes:
Protractor and tape measure combined to form a new quantity Square. On the basis of the original tape, with the function of the measured angle, pull the tape measure the length, angle horizontally tape measure, users can save time and space, easier to use.
Zhengzhou University of Light Industry
Zhengzhou City, China
Zhengzhou University of Light Industry
Zhengzhou City, China
Zhengzhou University of Light Industry
Zhengzhou City, China