| 摘要 |
FIELD: the invention refers to geodesy and may find application at measuring the position of a pipeline axis in space. ^ SUBSTANCE: the arrangement has three equal bolts installed in the openings of a bar. Each one of them has a scale along the whole length and supporting rollers at the lower end. The central bolt executes the role of a bench mark. The extreme bolts are equidistant from the central bolt. The distance between the extreme bolts is no more than the diameter of the pipeline. The bolts are freely traveling in the axis direction in the openings of the bar. The bar is rotated relatively to the central bolt. At that the extreme bolts either go down or go up. The greatest difference of meanings between the central and the extreme bolts corresponds to the position of the central bolt exactly at the axis of the pipeline. ^ EFFECT: increases accuracy of locating space position of the axis of the buried pipeline. ^ 2 cl, 2 dwg |
