| 摘要 |
Device for measuring the elevation height of points on gable walls. The invention relates to a telescopic device making it possible to measure, without any other instrument or tool, the height at which the ridge beam of a building will be situated. It is composed of at least three telescopic tubes 1, 2, 3, in which the element 3 with the smallest cross-section comprises a graduated multiple rule 4. Adjustment is made by direct reading, and locking in the adopted position is done with the screw 5. The device according to the invention is intended in particular for erecting gable walls from conventional materials in the form of separate blocks (solid or hollow bricks, hollow blocks, breeze blocks, stone, porous concrete blocks and any other similar materials). <IMAGE>
|
