| 摘要 |
Abstract A ladder support device for supporting a ladder relative to a structure such as a building, the ladder support device includes a spacer which rotates out from the ladder, and a bearing portion at the end of the spacer which may hook behind guttering along the edge of the building, and bear against the building. When the ladder is retracted, the spacer may be rotated to be contained entirely within the gap between the side members of the ladder section. 16' 16 12' 13' / r |
