| 摘要 |
PURPOSE:To obtain the apparatus characterized by easy operation and movement which can perform instantaneous measurement, by providing a means, which computes the distance to a wall surface at every measuring pitch angle based on an projecting angle and also computes the shape and size of the cross section of a tunnel. CONSTITUTION:A main body 1 is coaxially rotated with respect to a tripod 2. A tube body 3 is coaxially rotated around a central axis 3a. A reflecting mirror 6 is rotated around an axis 6a. The signals of the rotary angles of the main body 1, the tube body 3 and the reflecting mirror 6 and the signal detected by a collimator 7 are connected to a small computer 9 through a cable 8. The measured distance X is stored by the computer 9 at every measuring pitch DELTAomega all the time. The profile of the cross section is computed and displayed by a display, a printer and the like. The cross sectional area is also computed. By using this apparatus, the operating and movement can be made easy. The measurement can be performed instantaneously. |
