| 摘要 |
<P>PROBLEM TO BE SOLVED: To exactly determine an intersection point of two horizontally-stretched leveling strings, and a horizontal position positioned in the horizontal direction at a lower part of the intersection point by simple structure. <P>SOLUTION: In a positioning method for determining an intersection point A between two horizontally-stretched leveling strings 1, 2 and a horizontal position C positioned in the horizontal direction, both ends of each of two plumb-bobs 10 are hung on each of the two leveling strings 1, 2 in the vicinity of the intersection A between the two leveling strings 1, 2, and the horizontal position C is determined on a coincidence line of the intersection point A between the two leveling strings 1, 2 and an intersection point B between the two plumb-bobs 10. <P>COPYRIGHT: (C)2013,JPO&INPIT |
