| 摘要 |
<p>The aid has a stair-type arrangement including a stair part (4), which is formed with intermediate stages (5) from two parallel tread supports (3). The stair part is connected with gusset plates (10), which are fastened at the supports. Two slotted holes are arranged at a distance from one another in the respective plates, by which fastening screws grasp through and the level is designed as chassis frame attacks.</p> |
