| 1 | In a vertical or perpendicular line. | |
| 2 | Hull floors being fitted and checked for alignment with a centreline plumb line. | |
| 3 | Finally, the accuracy analysis of the quasi-plumb line reproduced by the device is demonstrated. | |
| 4 | when a carpenter is satisfied that the walls are straight and aligned with the standard of the plumb line, he says that they are "true." | |
| 5 | Bdfor using the sling, it should have a test. The shoice for the lifting point should be on the same line with the center of gravity. |