| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a water level enabling secure gripping and operation and capable of using a stable base surface from an ergonomic point of view. <P>SOLUTION: A water level with a profile body 13 as a water level body has at least one bubble tube body. The profile body 13 is formed asymmetrically against a perpendicular axis line 18 extending perpendicularly against a measuring surface 26 over the length of the profile body 13 on the side face side and has a gutter shape viewing from the longitudinal direction of the profile body 13 as a first side face 14 on another side face. A second side face 16 on the opposite side of the side face is composed of a first part 42 which extends at the head part side and has a convex shape and a second part 44 which is continuous to the first part. The interval between the second part 44 and the perpendicular axis line 18 of the profile body 13 starts from the first part 42 and expands in the direction of the measuring surface 26. <P>COPYRIGHT: (C)2012,JPO&INPIT |
