Li Yu, Li Shaoji, Zhu Hang. New method for laser measurement of straightness of large sized objects[J]. Chinese Journal of Lasers, 1984, 11(6): 365
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This paper relates a new method for laser measurement of straightness of large sized objects. The advantages of the method are that its accuracy is not dependent on the straightness of the laser beam and stability of the laser itself. Moreover, straightness of tens of microms can be measured and an accuracy of a fraction of a micron is readily given by coarse grating.