| 摘要 |
The tool stretches telescopic tubes and comprises jaws (8, 9) destined to be fixed one on the end of the groove (1) and the other on side (2). One of the sleeves is fixed to a shaft (7) on a jack (7). The other sleeve is fixed to the body of the jack (5) and the jack is able to displace the shaft (7). The jaws (8, 9) may be in the form of a "U" and may be joined to each other. |
