| 摘要 |
<p>A device for supporting the lower ends of ladder stiles on unlevel ground comprises a flat flexible mat (7) having at one end a ramp portion (1). In use, one stile rests on the flat mat and the other rests, at an appropriate height on the ramp portion, which faces the wall against which the ladder leans. The ramp portion is rotatable through 180° to provide for left and right-handedness.</p> |
