DEVICE FOR PHOTOGRAPHING DESTRUCTION OF CONCRETE STRUCTURE

摘要

PROBLEM TO BE SOLVED: To attain the compactification of a whole device and to make a photographic image data provided with locating factors obtainable. SOLUTION: A supporting frame 5 is provided with several measuring light beam emitting bodies 9 and 10 to emit at least two or more parallel light beams a-1 which are to be locating factors and are in parallel to the outside of a camera main body 7 for photographing the crack or the like of a surface to be investigated 3 or the like and several measuring light beam emitting bodies 11 and 12 to emit at least two or more angled light beams b-1 having a specified angle to the outside to an optical axial line Y passing through the center of a camera lens 37. COPYRIGHT: (C)2004,JPO