| 摘要 |
A boroscope (60) has a first end (62) and a second end (64) and the first end (62) of the boroscope (60) has an optical fibre (66) and light source (68). A working head (70) is attached to the first end (62) of the boroscope (60). The working head (70) has an electrical motor (72) and a tool (74) is attached to and is arranged to be driven by the electrical motor (72) and the boroscope (60) carries a cable (76) extending from the electrical motor (72) to the second end (64) of the boroscope (60). |
