| 摘要 |
<p>A device for adjusting the inclination of a building surface, the device having two mutually cop-operating adjusting elements. The first element is for establishing an initial angle alpha and the second adjusting element is moved between an initial position and operational position selected by the user depending on the slope to be given to the building surface. The second adjusting element is selectively adjustable relative to the first adjusting element and thereby produces the slope required for the building surface by positioning the second element with respect to the first by mutual rotation. The device also has an adjusting means for making each mutual position corresponding to an adjusting angle alpha.</p> |
