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Conventional rulers normally have to be adjusted to the 0 point to then draw a line in order to be accurate. To eliminate this step, the 0 point ruler automatically goes back to the 0 point wherever the pencil touches it. The entire top side consists of a pressure-sensitive touch screen, which returns to the 0 point whenever it senses pressure. Using the 0 point as the starting point, it marks the numbers that go before and after.
Daegu University
Gyeongsan, South Korea
Chul Sung Ahn
Chang Dae Jeon
Da Hye Lee
Hee Chul Kwak
