| 摘要 |
PROBLEM TO BE SOLVED: To provide a measuring instrument capable of safely, simply, and highly accurately measuring an inside diameter of a cylinder liner.SOLUTION: A cylinder liner inside-diameter measuring instrument includes: a measuring instrument body 12 that, when D is an inside diameter of a cylinder liner 30 as a measuring object, is formed to have a diameter that has a clearance of from (1/500)D to (1/1000)D between itself and the inside diameter D and a thickness along an axial core of the cylinder liner 30; a plurality of non-contact type gap sensors 14a, 14b, and 14c provided on a circumferential face of the measuring instrument body 12; a depth meter 16 that measures the depth of the cylinder liner 30; and insertion means 40 that inserts the measuring instrument body 12 into the inside of the cylinder liner 30. |
