| 摘要 |
A process for measuring the contour configuration of an article defined by numerous cylindrical surface portions, is disclosed, which process comprises placing the article on a turntable, irradiating parallel light beams upon one side portion of the article while rotating the turntable, detecting changes, as a function L( theta ) by means of a light-receiving member, in locations L at which the parallel light beams are interrupted by the article, said theta denoting a rotational angle of the turntable, inputting data of L( theta ) thus detected into a memory of a computer, calculating a value of L( theta )+L( theta 180 DEG ), comparing the thus calculated value with that for an ideal contour configuration, and correcting deviations in a position and angle of the article. Thereby, a correct measured value is obtained.
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