| 摘要 |
PROBLEM TO BE SOLVED: To provide a water depth measuring device capable of improving the resolution of the depth of water without enlarging. SOLUTION: The water depth measuring device A measures the depth (d) of water of a road surface R with a detection body 2 where color is varied by variation in transmittancy of light when a detection surface 9a comes into contact with the water W. The detection body 2 supported by a support body 1 is arranged vertically movably. COPYRIGHT: (C)2007,JPO&INPIT |
