| 摘要 |
A device for leveling a metal ladder comprising a mounting bracket which can be attached to the outside web of a ladder side rail, a threaded shaft embodied with a handle at its upper distal end and a convex semi-shperical head at its lower distal end which is sized to operate within a threaded bore hole in the distal member of said mounting bracket in order to provide means to raise or lower a pivotable ladder foot embodied with a concave semi-spherical surface within the raised center portion of said foot in order to provide a pivoting means for said foot with respect to said threaded shaft.
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