| 摘要 |
An apparatus to secure a ladder to a ferromagnetic work surface, such as a metal storage tank, comprises a pair of brackets removably attached near the top of the ladder. The brackets are hinged to magnet mounts, which each hold a permanent magnet that releasably holds the ladder in place against the work surface. The apparatus prevents the ladder from slipping while a worker is climbing the ladder or while working from the ladder. |
