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Ruler on a flat surface of the table, it is difficult to take up a ruler.
The ruler to solve this problem, the two sides through the ruler to do
Cutaway handle, so a ruler on a flat surface of the table, we only need
to press a light side, a ruler will tilt the other side, we get it is
very convenient. This structure is also resolved through the use of
different ways for the right-hand man, but the problem using the same
yardstick. Change the value of so high a ruler.
Jiangxi University of Finance&Econmics
Nanchang City,Jiangxi Province, China
Zhongbiao Jiang Guanglei Huang Huiping Ling Kai Deng