二点連鎖による平面度測定法について

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タイトル別名
  • On a Method for Measuring Flatness by Two-Point Connecting Method
  • 2点連鎖による平面度測定法について
  • 2テン レンサ ニ ヨル ヘイメンド ソクテイホウ ニ ツイテ

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In measuring of flatness of a surface plate by sensitive spirit level method, the so-called two-point connecting method, it is widely known to the public that a series of level readings is made for two series of parallel lines spaced equally, with one set of lines at right angles to the other set, so as to form a network of squares. In this case, how to connect these measuring values differs in each case, but their connecting orders are generally troublesome in some degree. Accordingly, if the magnitude of deviation from the ideal plane at any lattice point is given as the total sum of products obtained by multiplying the measured value at each position by each coefficient provided at the above each position, we are able to find the flatness of the surface plate easily without employing such troublesome connecting order. Now, in this paper, from the point of view mentioned above, the author gives such value of coefficient prescribed at the above each position, and makes it possible to find the flatness of the surface plate both easily and mechanically.

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