| 摘要 |
A method and apparatus for inspecting a hole, particularly a drilled hole, for example for rivets in aircraft construction includes an annular measuring head 15 having a plurality of resiliently mounted, radically extending wall contact probes 16, which head is passed through the drilled hole 11. Each probe 16 passes through the head to the lumen 17 of the head annulus. The position of the inner ends of the probes 16 within the lumen 17 is measured. The measurement may be conducted using imaging by use of a backlight and a digital camera or a CCD array. |
