| 摘要 |
<p>An object of the invention is measuring tape with spirit level, including the flexible tape with scale, coiled spirally in the housing, equipped with coiling spring mechanism and blocking device, whereas the level is located on the measuring tape. The tape is characterized in that to the basic tape (2), spirally coiled on the basic reel (3) of the basic toothed wheel (4), the guiding tape (5) is moveably fixed and coiled on the guiding reel (6) of the guiding toothed wheel (7). At the end of guiding tape (5), the level (8) is fixed, whereas the guiding toothed wheel (7) is connected to the basic toothed wheel (4) through the third wheel (9). The reference diameter of the basic toothed wheel (4) is equal the reference diameter of the guiding toothed wheel (7). The ratio of diameter (D3) of the basic reel (3) to the diameter (D6) of the guiding reel (6) is in the range of 1,5 to 2,5, so, that the end of guiding tape (5) is always located inside the segment measured, advantageously in the middle of its length.</p> |
