| 摘要 |
PURPOSE:To improve the workability in the work of mounting a mounting plate which is miniaturized by making it possible to determine the horizontal position of the mounting plate by means of a marking and hanging swing string provided freely rotatably on the mounting plate. CONSTITUTION:A projection 3a provided on the lower flange 3' of a mounting plate 1 is located at a position in which a beam 9 is perpendicular to the mounting plate 1 when an arm 10 is engaged to the projection 3a at an engagement section 10a of the arm 10. In this state the mounting plate 1 can be easily installed horizontally if a hanging swinging string 5 is matched to a marking 9' on the beam 9. At this time if the length of the beam 9 is determined so as to bring the tip end of the beam 9 to the center of a pierced hole of a piping, the center of the piercing hole of a central piping can be easily determined. In the same manner a projection 3b is provided so as to bring a marking 10' of the arm 10 to the center of the piercing hole of an outside piping when an engagement section 10b is engaged to the projection 3b. If a projection 3c is also provided in a position in which the center of a piercing hole of an intermediate piping can be determined when the projection 3c is engaged to an engagement section 10c, it is possible to make the mounting plate small and light, and easier to be handled and make it easy to confirm horizontally and the determina tion of the position of the piercing hole of the piping. |
