| 摘要 |
This is ladder that is more user friendly than the arts that are on the market today. This is accomplished by moving the legs of the ladders closer together than present day ladders, and by putting a warning bell on the second step from the bottom warning there is another step below before landing on a solid surface. Adjustable legs are a new feature in this new art of modern ladders. This eliminates time spent looking for a block or other object to put under the leg, thus saving time. Having the steps closer together makes it easier for the elderly and people with shorter legs to ascend and descend the ladder.
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