| 摘要 |
A scope for viewing the internal surface of a bore or similar cavity for use in combination with a light source. The scope includes a rod having an image transmitting end and an image viewing end. Diffusing and reflecting means are located at the rod viewing end and are surrounded by a housing. External light is directed onto the diffusing and reflecting means which in turn directs the light along the length of the rod to its image transmitting end and onto the cavity surface when the scope is inserted into the cavity. The image transmitting end of the rod allows the cavity surface to be viewed.
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