| 摘要 |
<p>A detector (1) with a telescopic carrier/guide rod (2) on which at one end a measuring probe (3) is disposed, whereby the carrier/guide rod (2) comprises at least two anti-twist tubes (6, 7, 8) longitudinally movable and lockable in one another, which form an outer tube (6, 7) and an inner tube (7, 8), whereby the tubes (6, 7, 8) comprise a linear sliding guide (12) as an anti-twist lock relative to one another. The linear sliding guide (12) comprises at least one longitudinal rib (14) extending inside over the entire length of the outer tube (6, 7) and at least one rib guide (15) extending outside over a partial length of the inner tube (7, 8) on the insertion side of tube end (20) with a recess (17) with which the longitudinal rib (14) engages. The rib guide (15) is formed by a guide sleeve (18), which is divided in a circumferential direction. (Figure 2)</p> |
