| 20080276716 | Penetration-type pipe strain gauge - A penetration-type pipe strain gauge easily transportable and easily installable in various places at low cost in a short period of time to measure strain produced in a shallow layer of the ground. Strain gauges are attached to the outer peripheral surface of an inner pipe, and a pipe strain gauge body is formed by integrally incorporating the inner pipe in an outer pipe. A boring screw is provided at the forward end of the pipe strain gauge body. A rotary tool mounting part for mounting a tool for rotating the pipe strain gauge body is formed at the rear end of the strain gauge body. The pipe strain gauge body is buried in the shallow layer of the ground by using the rotary tool. | 11-13-2008 |
