As shown in the figure, it is a new type of shaft keyway inspection instrument, which has won the national invention patent. The lower side of the bow frame 1 is fixed with two parallel positioning rollers 17 which are strictly parallel. The two rollers 17 ride on the shaft, so the positioning reference of the structural inspection instrument is the outer cylindrical surface of the shaft, and the selection of the reference elements is reasonable, indicating the measurement. The head 18 directly points to the entire side of the keyway to be tested and can move up and down. Therefore, the selection of the measured elements is also true. Means
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Handan Jiankun Hardware Products Co., Ltd / Handan best import and export trade co., Ltd , https://www.jkscrew.com