| 摘要 |
The utility model relates to mine survey. Device for measurement of horizontal deformations of the surface of earth or under-worked buildings has two wall or earth marks, wire that goes through block from one of the marks and permanently suspended tension load, at that on the wire from one mark fixed scale is attached, with divisions and magnifying glass, and on the other mark needle is fixed, as reading index, at that the device is equipped with protective metal or plastic pipe. The utility model provides increase of accuracy of measurements. |
