| 摘要 |
An apparatus is provided for detecting flaws in a threaded bore having at least one thread with a helical root is provided. The apparatus may include a thread engagement member configured to engage the at least one thread of the threaded bore. The apparatus may also include a probe coupled with the thread engagement member. The probe may be configured to direct light onto the helical root of the threaded bore. The probe and the thread engagement member may be adapted to rotate relative to the bore while the probe continually directs light onto the helical thread so that the light sweeps along a section of the helical root.
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