| 摘要 |
When folded the step stool is self standing and has a narrow width to permit the step stool to be stored in otherwise unusable spaces. When the legs are extended, a stable triangular support for two or more steps is provided. The vertical uprights of the device carry a handgrip positioned well above the level of the highest step to be useful when a person is on the highest step and during ascent and descent of the steps.
|
