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Smart Lazer Ruler can measure easier than before ones. Before ruler has many inconviniences because it has to measure from the zero. but Smart Lazer Ruler can measure by lazer automatically as soon as it touch on the things.
Baek Seok uiversity
Cheonan, South Korea
Baek Seok uiversity
Cheonan, South Korea
Hae Min Lee
Baek Seok uiversity
Seoul, South Korea
Sung Yub Park