| 摘要 |
An adjustable step ladder which includes a first pair of legs with spaced rungs, a second pair of legs, with spaced rungs, slidably fixed to the first pair of legs, mechanisms for locking the first pair of legs to the second pair of legs, a third pair of legs which are separately telescopically adjustable in length, to cater for uneven ground, and which support the first and second pairs of legs at inclined positions, and a stabiliser for bracing lower ends of the third pair of legs. |
