| 摘要 |
PROBLEM TO BE SOLVED: To provide a weight movement width measurement tool of a trolley wire tension adjustment device which can be mounted to two types of vibration preventive rods having different outer diameters, is excellent in weather resistance, and is easy to be visually recognized even by a moving vehicle.SOLUTION: A pair of hemispheres 1a, 1b which become approximate sphere by being bonded together, are connected so as to open and close. Two magnet accommodation parts 7a crossing in a cross shape in a center of the bonded surface of relative circles of the hemispheres 1a, 1b, are formed. Magnet members 9a of a half-cut cylindrical shape having different inner diameters, are arranged in the magnet accommodation parts 7a. Two through holes 14, 15 are formed to cross in a cross shape in a center of the approximate sphere. Vibration preventive rods 12 having different outer diameters are inserted through the respective through holes 14, 15.SELECTED DRAWING: Figure 3 |
